31130113203320 has 32 divisors (see below), whose sum is σ = 70043457229200. Its totient is φ = 12451920388608.

The previous prime is 31130113203247. The next prime is 31130113203323. The reversal of 31130113203320 is 2330231103113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130113203323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187967 + ... + 7892753.

Almost surely, 2^{31130113203320} is an apocalyptic number.

It is an amenable number.

31130113203320 is an abundant number, since it is smaller than the sum of its proper divisors (38913344025880).

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

31130113203320 is a wasteful number, since it uses less digits than its factorization.

31130113203320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7805807 (or 7805803 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 31130113203320 its reverse (2330231103113), we get a palindrome (33460344306433).

The spelling of 31130113203320 in words is "thirty-one trillion, one hundred thirty billion, one hundred thirteen million, two hundred three thousand, three hundred twenty".