31502320230 has 32 divisors (see below), whose sum is σ = 75944623104. Its totient is φ = 8362946016.

The previous prime is 31502320189. The next prime is 31502320243. The reversal of 31502320230 is 3202320513.

It is a junction number, because it is equal to n+sod(n) for n = 31502320197 and 31502320206.

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 15 ways as a sum of consecutive naturals, for example, 2347744 + ... + 2361123.

It is an arithmetic number, because the mean of its divisors is an integer number (2373269472).

Almost surely, 2^31502320230 is an apocalyptic number.

31502320230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31502320230 is an abundant number, since it is smaller than the sum of its proper divisors (44442302874).

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

31502320230 is a wasteful number, since it uses less digits than its factorization.

31502320230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4709100.

The product of its (nonzero) digits is 1080, while the sum is 21.

Adding to 31502320230 its reverse (3202320513), we get a palindrome (34704640743).

The spelling of 31502320230 in words is "thirty-one billion, five hundred two million, three hundred twenty thousand, two hundred thirty".