31113223085719 has 2 divisors, whose sum is σ = 31113223085720. Its totient is φ = 31113223085718.

The previous prime is 31113223085677. The next prime is 31113223085729. The reversal of 31113223085719 is 91758032231113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31113223085719 - 2²⁵ = 31113189531287 is a prime.

It is a super-2 number, since 2×31113223085719² (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 (31113223085729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556611542859 + 15556611542860.

It is an arithmetic number, because the mean of its divisors is an integer number (15556611542860).

Almost surely, 2^{31113223085719} is an apocalyptic number.

31113223085719 is a deficient number, since it is larger than the sum of its proper divisors (1).

31113223085719 is an equidigital number, since it uses as much as digits as its factorization.

31113223085719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 31113223085719 in words is "thirty-one trillion, one hundred thirteen billion, two hundred twenty-three million, eighty-five thousand, seven hundred nineteen".