31300321120 has 48 divisors (see below), whose sum is σ = 78296839488. Its totient is φ = 11783649280.

The previous prime is 31300321109. The next prime is 31300321123. The reversal of 31300321120 is 2112300313.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 31300321094 and 31300321103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31300321123) by changing a digit.

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, 5751016 + ... + 5756455.

It is an arithmetic number, because the mean of its divisors is an integer number (1631184156).

Almost surely, 2^31300321120 is an apocalyptic number.

It is an amenable number.

31300321120 is an abundant number, since it is smaller than the sum of its proper divisors (46996518368).

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

31300321120 is a wasteful number, since it uses less digits than its factorization.

31300321120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11507503 (or 11507495 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31300321120 its reverse (2112300313), we get a palindrome (33412621433).

The spelling of 31300321120 in words is "thirty-one billion, three hundred million, three hundred twenty-one thousand, one hundred twenty".