31161563356042 has 16 divisors (see below), whose sum is σ = 53420306634432. Its totient is φ = 13354834789440.

The previous prime is 31161563356039. The next prime is 31161563356057. The reversal of 31161563356042 is 24065336516113.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31161563355983 and 31161563356001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8467759 + ... + 11576962.

It is an arithmetic number, because the mean of its divisors is an integer number (3338769164652).

Almost surely, 2^{31161563356042} is an apocalyptic number.

31161563356042 is a deficient number, since it is larger than the sum of its proper divisors (22258743278390).

31161563356042 is a wasteful number, since it uses less digits than its factorization.

31161563356042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20155773.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 31161563356042 in words is "thirty-one trillion, one hundred sixty-one billion, five hundred sixty-three million, three hundred fifty-six thousand, forty-two".