31113000320 has 64 divisors (see below), whose sum is σ = 76944373200. Its totient is φ = 12016048128.

The previous prime is 31113000311. The next prime is 31113000353. The reversal of 31113000320 is 2300031113.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 31113000295 and 31113000304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819614 + ... + 856733.

Almost surely, 2^31113000320 is an apocalyptic number.

It is an amenable number.

31113000320 is an abundant number, since it is smaller than the sum of its proper divisors (45831372880).

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

31113000320 is a wasteful number, since it uses less digits than its factorization.

31113000320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676395 (or 1676383 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 31113000320 its reverse (2300031113), we get a palindrome (33413031433).

The spelling of 31113000320 in words is "thirty-one billion, one hundred thirteen million, three hundred twenty", and thus it is an aban number.