31011020130 has 32 divisors (see below), whose sum is σ = 74434860864. Its totient is φ = 8268670656.

The previous prime is 31011020113. The next prime is 31011020137. The reversal of 31011020130 is 3102011013.

It is not an unprimeable number, because it can be changed into a prime (31011020137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235692 + ... + 342888.

It is an arithmetic number, because the mean of its divisors is an integer number (2326089402).

Almost surely, 2^31011020130 is an apocalyptic number.

31011020130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31011020130 is an abundant number, since it is smaller than the sum of its proper divisors (43423840734).

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

31011020130 is a wasteful number, since it uses less digits than its factorization.

31011020130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116850.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 31011020130 its reverse (3102011013), we get a palindrome (34113031143).

The spelling of 31011020130 in words is "thirty-one billion, eleven million, twenty thousand, one hundred thirty".