31013223013111 has 2 divisors, whose sum is σ = 31013223013112. Its totient is φ = 31013223013110.

The previous prime is 31013223013081. The next prime is 31013223013183. The reversal of 31013223013111 is 11131032231013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31013223013111 - 2²¹ = 31013220915959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31013223013211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506611506555 + 15506611506556.

It is an arithmetic number, because the mean of its divisors is an integer number (15506611506556).

Almost surely, 2^{31013223013111} is an apocalyptic number.

31013223013111 is a deficient number, since it is larger than the sum of its proper divisors (1).

31013223013111 is an equidigital number, since it uses as much as digits as its factorization.

31013223013111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 31013223013111 its reverse (11131032231013), we get a palindrome (42144255244124).

The spelling of 31013223013111 in words is "thirty-one trillion, thirteen billion, two hundred twenty-three million, thirteen thousand, one hundred eleven".