31023123213287 has 2 divisors, whose sum is σ = 31023123213288. Its totient is φ = 31023123213286.

The previous prime is 31023123213233. The next prime is 31023123213319. The reversal of 31023123213287 is 78231232132013.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31023123213287 - 2⁶ = 31023123213223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31023123213287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31023123113287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511561606643 + 15511561606644.

It is an arithmetic number, because the mean of its divisors is an integer number (15511561606644).

Almost surely, 2^{31023123213287} is an apocalyptic number.

31023123213287 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023123213287 is an equidigital number, since it uses as much as digits as its factorization.

31023123213287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 31023123213287 in words is "thirty-one trillion, twenty-three billion, one hundred twenty-three million, two hundred thirteen thousand, two hundred eighty-seven".