312131130 has 16 divisors (see below), whose sum is σ = 749114784. Its totient is φ = 83234960.

The previous prime is 312131119. The next prime is 312131143. The reversal of 312131130 is 31131213.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5202156 + ... + 5202215.

It is an arithmetic number, because the mean of its divisors is an integer number (46819674).

Almost surely, 2^312131130 is an apocalyptic number.

312131130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

312131130 is an abundant number, since it is smaller than the sum of its proper divisors (436983654).

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

312131130 is a wasteful number, since it uses less digits than its factorization.

312131130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10404381.

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

The square root of 312131130 is about 17667.2332299090. The cubic root of 312131130 is about 678.3372944301.

Adding to 312131130 its reverse (31131213), we get a palindrome (343262343).

The spelling of 312131130 in words is "three hundred twelve million, one hundred thirty-one thousand, one hundred thirty".