31023013331197 has 2 divisors, whose sum is σ = 31023013331198. Its totient is φ = 31023013331196.

The previous prime is 31023013331161. The next prime is 31023013331249. The reversal of 31023013331197 is 79113331032013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31022516085796 + 497245401 = 5569786^2 + 22299^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31023013331197 is a prime.

It is a super-2 number, since 2×31023013331197² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31023013331147) 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 as a sum of consecutive naturals, namely, 15511506665598 + 15511506665599.

It is an arithmetic number, because the mean of its divisors is an integer number (15511506665599).

Almost surely, 2^{31023013331197} is an apocalyptic number.

It is an amenable number.

31023013331197 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023013331197 is an equidigital number, since it uses as much as digits as its factorization.

31023013331197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 37.

The spelling of 31023013331197 in words is "thirty-one trillion, twenty-three billion, thirteen million, three hundred thirty-one thousand, one hundred ninety-seven".