31268540923 has 2 divisors, whose sum is σ = 31268540924. Its totient is φ = 31268540922.

The previous prime is 31268540911. The next prime is 31268540951. The reversal of 31268540923 is 32904586213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31268540923 - 2³³ = 22678606331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31268540923.

It is not a weakly prime, because it can be changed into another prime (31268540983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15634270461 + 15634270462.

It is an arithmetic number, because the mean of its divisors is an integer number (15634270462).

Almost surely, 2^31268540923 is an apocalyptic number.

31268540923 is a deficient number, since it is larger than the sum of its proper divisors (1).

31268540923 is an equidigital number, since it uses as much as digits as its factorization.

31268540923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 31268540923 in words is "thirty-one billion, two hundred sixty-eight million, five hundred forty thousand, nine hundred twenty-three".