31120032130 has 64 divisors (see below), whose sum is σ = 62560480896. Its totient is φ = 11050560000.

The previous prime is 31120032127. The next prime is 31120032131. The reversal of 31120032130 is 3123002113.

It is not an unprimeable number, because it can be changed into a prime (31120032131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 791845 + ... + 830215.

It is an arithmetic number, because the mean of its divisors is an integer number (977507514).

Almost surely, 2^31120032130 is an apocalyptic number.

31120032130 is an abundant number, since it is smaller than the sum of its proper divisors (31440448766).

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

31120032130 is a wasteful number, since it uses less digits than its factorization.

31120032130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38563.

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

Adding to 31120032130 its reverse (3123002113), we get a palindrome (34243034243).

The spelling of 31120032130 in words is "thirty-one billion, one hundred twenty million, thirty-two thousand, one hundred thirty".