312012131001 has 4 divisors (see below), whose sum is σ = 416016174672. Its totient is φ = 208008087332.

The previous prime is 312012130949. The next prime is 312012131017. The reversal of 312012131001 is 100131210213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312012131001 - 2⁹ = 312012130489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312012131401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52002021831 + ... + 52002021836.

It is an arithmetic number, because the mean of its divisors is an integer number (104004043668).

Almost surely, 2^312012131001 is an apocalyptic number.

It is an amenable number.

312012131001 is a deficient number, since it is larger than the sum of its proper divisors (104004043671).

312012131001 is a wasteful number, since it uses less digits than its factorization.

312012131001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104004043670.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 312012131001 its reverse (100131210213), we get a palindrome (412143341214).

The spelling of 312012131001 in words is "three hundred twelve billion, twelve million, one hundred thirty-one thousand, one".