312031100311 has 12 divisors (see below), whose sum is σ = 364980350280. Its totient is φ = 265977568080.

The previous prime is 312031100309. The next prime is 312031100347. The reversal of 312031100311 is 113001130213.

It is not a de Polignac number, because 312031100311 - 2¹ = 312031100309 is a prime.

It is a super-2 number, since 2×312031100311² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312031100351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17582241 + ... + 17599978.

It is an arithmetic number, because the mean of its divisors is an integer number (30415029190).

Almost surely, 2^312031100311 is an apocalyptic number.

312031100311 is a deficient number, since it is larger than the sum of its proper divisors (52949249969).

312031100311 is a wasteful number, since it uses less digits than its factorization.

312031100311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35182414 (or 35182407 counting only the distinct ones).

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

Adding to 312031100311 its reverse (113001130213), we get a palindrome (425032230524).

The spelling of 312031100311 in words is "three hundred twelve billion, thirty-one million, one hundred thousand, three hundred eleven".