312031300133 has 24 divisors (see below), whose sum is σ = 384367233600. Its totient is φ = 251861436288.

The previous prime is 312031300123. The next prime is 312031300169. The reversal of 312031300133 is 331003130213.

It is a de Polignac number, because none of the positive numbers 2^k-312031300133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312031300123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 847988 + ... + 1158941.

It is an arithmetic number, because the mean of its divisors is an integer number (16015301400).

Almost surely, 2^312031300133 is an apocalyptic number.

It is an amenable number.

312031300133 is a deficient number, since it is larger than the sum of its proper divisors (72335933467).

312031300133 is a wasteful number, since it uses less digits than its factorization.

312031300133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007129 (or 2007122 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 312031300133 its reverse (331003130213), we get a palindrome (643034430346).

The spelling of 312031300133 in words is "three hundred twelve billion, thirty-one million, three hundred thousand, one hundred thirty-three".