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31242254054051 = 278929633378023
BaseRepresentation
bin1110001101010001001110…
…11101000111001010100011
311002121201201101212012211102
413012220213131013022203
513043333114014212201
6150240254322505015
76403115115543215
oct706504735071243
9132551641765742
1031242254054051
119a55846a25377
123606b5b80516b
131458193a855b1
147a01c15905b5
15392a392e426b
hex1c6a277472a3

31242254054051 has 8 divisors (see below), whose sum is σ = 31254593372640. Its totient is φ = 31229915556352.

The previous prime is 31242254053987. The next prime is 31242254054071. The reversal of 31242254054051 is 15045045224213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31242254054051 - 26 = 31242254053987 is a prime.

It is a super-2 number, since 2×312422540540512 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31242254053996 and 31242254054014.

It is not an unprimeable number, because it can be changed into a prime (31242254054071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82457426 + ... + 82835448.

It is an arithmetic number, because the mean of its divisors is an integer number (3906824171580).

Almost surely, 231242254054051 is an apocalyptic number.

31242254054051 is a deficient number, since it is larger than the sum of its proper divisors (12339318589).

31242254054051 is a wasteful number, since it uses less digits than its factorization.

31242254054051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410445.

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 31242254054051 its reverse (15045045224213), we get a palindrome (46287299278264).

The spelling of 31242254054051 in words is "thirty-one trillion, two hundred forty-two billion, two hundred fifty-four million, fifty-four thousand, fifty-one".

Divisors: 1 2789 29633 378023 82646437 1054306147 11201955559 31242254054051