312244021031 has 4 divisors (see below), whose sum is σ = 316005997272. Its totient is φ = 308482044792.

The previous prime is 312244021007. The next prime is 312244021079. The reversal of 312244021031 is 130120442213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 312244021031 - 2¹⁰ = 312244020007 is a prime.

It is a super-2 number, since 2×312244021031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312244020988 and 312244021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312244021081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1880987996 + ... + 1880988161.

It is an arithmetic number, because the mean of its divisors is an integer number (79001499318).

Almost surely, 2^312244021031 is an apocalyptic number.

312244021031 is a deficient number, since it is larger than the sum of its proper divisors (3761976241).

312244021031 is an equidigital number, since it uses as much as digits as its factorization.

312244021031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3761976240.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 312244021031 its reverse (130120442213), we get a palindrome (442364463244).

The spelling of 312244021031 in words is "three hundred twelve billion, two hundred forty-four million, twenty-one thousand, thirty-one".