31162861930 has 16 divisors (see below), whose sum is σ = 56096584200. Its totient is φ = 12464381952.

The previous prime is 31162861927. The next prime is 31162861957. The reversal of 31162861930 is 3916826113.

It can be written as a sum of positive squares in 4 ways, for example, as 30482017281 + 680844649 = 174591^2 + 26093^2 .

It is a super-2 number, since 2×31162861930² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94162 + ... + 266818.

Almost surely, 2^31162861930 is an apocalyptic number.

31162861930 is a deficient number, since it is larger than the sum of its proper divisors (24933722270).

31162861930 is a wasteful number, since it uses less digits than its factorization.

31162861930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190713.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 31162861930 in words is "thirty-one billion, one hundred sixty-two million, eight hundred sixty-one thousand, nine hundred thirty".