312031100113 has 8 divisors (see below), whose sum is σ = 315551046600. Its totient is φ = 308511464448.

The previous prime is 312031100107. The next prime is 312031100131. The reversal of 312031100113 is 311001130213.

It can be written as a sum of positive squares in 4 ways, for example, as 971693584 + 311059406529 = 31172^2 + 557727^2 .

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 312031100113 - 2²⁵ = 311997545681 is a prime.

It is a super-2 number, since 2×312031100113² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312031100153) 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, 2375445 + ... + 2503357.

It is an arithmetic number, because the mean of its divisors is an integer number (39443880825).

Almost surely, 2^312031100113 is an apocalyptic number.

It is an amenable number.

312031100113 is a deficient number, since it is larger than the sum of its proper divisors (3519946487).

312031100113 is a wasteful number, since it uses less digits than its factorization.

312031100113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155411.

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

Adding to 312031100113 its reverse (311001130213), we get a palindrome (623032230326).

The spelling of 312031100113 in words is "three hundred twelve billion, thirty-one million, one hundred thousand, one hundred thirteen".