31960616838 has 32 divisors (see below), whose sum is σ = 64627619040. Its totient is φ = 10536387840.

The previous prime is 31960616803. The next prime is 31960616839. The reversal of 31960616838 is 83861606913.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31960616839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148848 + ... + 293388.

It is an arithmetic number, because the mean of its divisors is an integer number (2019613095).

Almost surely, 2^31960616838 is an apocalyptic number.

31960616838 is an abundant number, since it is smaller than the sum of its proper divisors (32667002202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31960616838 is a wasteful number, since it uses less digits than its factorization.

31960616838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144952.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 31960616838 in words is "thirty-one billion, nine hundred sixty million, six hundred sixteen thousand, eight hundred thirty-eight".