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30040312325431 = 41028837321757
BaseRepresentation
bin1101101010010010011100…
…01001010010010100110111
310221100211022000110001221011
412311021032021102110313
512414140024423403211
6143520155020133051
76220224641452612
oct665111611222467
9127324260401834
1030040312325431
119632030181891
12345201b997187
13139ba35116755
1475bd5d219179
1537163de06921
hex1b524e252537

30040312325431 has 4 divisors (see below), whose sum is σ = 30040323750072. Its totient is φ = 30040300900792.

The previous prime is 30040312325423. The next prime is 30040312325609. The reversal of 30040312325431 is 13452321304003.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 30040312325431 - 23 = 30040312325423 is a prime.

It is a super-2 number, since 2×300403123254312 (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 = 30040312325393 and 30040312325402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30040312325131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442005 + ... + 7763761.

It is an arithmetic number, because the mean of its divisors is an integer number (7510080937518).

Almost surely, 230040312325431 is an apocalyptic number.

30040312325431 is a deficient number, since it is larger than the sum of its proper divisors (11424641).

30040312325431 is an equidigital number, since it uses as much as digits as its factorization.

30040312325431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11424640.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 30040312325431 its reverse (13452321304003), we get a palindrome (43492633629434).

The spelling of 30040312325431 in words is "thirty trillion, forty billion, three hundred twelve million, three hundred twenty-five thousand, four hundred thirty-one".

Divisors: 1 4102883 7321757 30040312325431