31300020332 has 24 divisors (see below), whose sum is σ = 62927800320. Its totient is φ = 13344060240.

The previous prime is 31300020277. The next prime is 31300020397. The reversal of 31300020332 is 23302000313.

It is a super-2 number, since 2×31300020332² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31300020332.

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, 2920982 + ... + 2931677.

It is an arithmetic number, because the mean of its divisors is an integer number (2621991680).

Almost surely, 2^31300020332 is an apocalyptic number.

It is an amenable number.

31300020332 is an abundant number, since it is smaller than the sum of its proper divisors (31627779988).

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

31300020332 is a wasteful number, since it uses less digits than its factorization.

31300020332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5852861 (or 5852859 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 31300020332 its reverse (23302000313), we get a palindrome (54602020645).

The spelling of 31300020332 in words is "thirty-one billion, three hundred million, twenty thousand, three hundred thirty-two".