311312130 has 32 divisors (see below), whose sum is σ = 779635584. Its totient is φ = 79406976.

The previous prime is 311312101. The next prime is 311312171. The reversal of 311312130 is 31213113.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224899 + ... + 226278.

It is an arithmetic number, because the mean of its divisors is an integer number (24363612).

Almost surely, 2^311312130 is an apocalyptic number.

311312130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

311312130 is an abundant number, since it is smaller than the sum of its proper divisors (468323454).

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

311312130 is a wasteful number, since it uses less digits than its factorization.

311312130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451210.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 311312130 is about 17644.0395034697. The cubic root of 311312130 is about 677.7434789794.

Adding to 311312130 its reverse (31213113), we get a palindrome (342525243).

The spelling of 311312130 in words is "three hundred eleven million, three hundred twelve thousand, one hundred thirty".