312131113 has 8 divisors (see below), whose sum is σ = 357321600. Its totient is φ = 267090720.

The previous prime is 312131087. The next prime is 312131119. The reversal of 312131113 is 311131213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312131113 - 2¹⁷ = 312000041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312131119) 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, 33028 + ... + 41413.

It is an arithmetic number, because the mean of its divisors is an integer number (44665200).

Almost surely, 2^312131113 is an apocalyptic number.

It is an amenable number.

312131113 is a deficient number, since it is larger than the sum of its proper divisors (45190487).

312131113 is an equidigital number, since it uses as much as digits as its factorization.

312131113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75047.

The product of its digits is 54, while the sum is 16.

The square root of 312131113 is about 17667.2327487923. The cubic root of 312131113 is about 678.3372821151.

Adding to 312131113 its reverse (311131213), we get a palindrome (623262326).

The spelling of 312131113 in words is "three hundred twelve million, one hundred thirty-one thousand, one hundred thirteen".