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31418370097 = 40077840871
BaseRepresentation
bin11101010000101011…
…100100100000110001
310000002121012120100221
4131100223210200301
51003321100320342
622233340413041
72161401511432
oct352053444061
9100077176327
1031418370097
111236293a524
126109b47181
132c691a614a
14174097d489
15c3d3eba67
hex750ae4831

31418370097 has 4 divisors (see below), whose sum is σ = 31426214976. Its totient is φ = 31410525220.

The previous prime is 31418370091. The next prime is 31418370101. The reversal of 31418370097 is 79007381413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31418370097 - 223 = 31409981489 is a prime.

It is a super-2 number, since 2×314183700972 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31418370091) 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, 3916429 + ... + 3924442.

It is an arithmetic number, because the mean of its divisors is an integer number (7856553744).

Almost surely, 231418370097 is an apocalyptic number.

It is an amenable number.

31418370097 is a deficient number, since it is larger than the sum of its proper divisors (7844879).

31418370097 is an equidigital number, since it uses as much as digits as its factorization.

31418370097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7844878.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 31418370097 in words is "thirty-one billion, four hundred eighteen million, three hundred seventy thousand, ninety-seven".

Divisors: 1 4007 7840871 31418370097