31461356123 has 2 divisors, whose sum is σ = 31461356124. Its totient is φ = 31461356122.

The previous prime is 31461356041. The next prime is 31461356137. The reversal of 31461356123 is 32165316413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31461356123 - 2⁸ = 31461355867 is a prime.

It is a super-2 number, since 2×31461356123² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31461356183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15730678061 + 15730678062.

It is an arithmetic number, because the mean of its divisors is an integer number (15730678062).

Almost surely, 2^31461356123 is an apocalyptic number.

31461356123 is a deficient number, since it is larger than the sum of its proper divisors (1).

31461356123 is an equidigital number, since it uses as much as digits as its factorization.

31461356123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The spelling of 31461356123 in words is "thirty-one billion, four hundred sixty-one million, three hundred fifty-six thousand, one hundred twenty-three".