312212013202031 has 4 divisors (see below), whose sum is σ = 312212271790032. Its totient is φ = 312211754614032.

The previous prime is 312212013202009. The next prime is 312212013202109. The reversal of 312212013202031 is 130202310212213.

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 312212013202031 - 2⁴² = 307813966690927 is a prime.

It is a super-2 number, since 2×312212013202031² (a number of 30 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 = 312212013201988 and 312212013202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312212013282031) 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, 127474406 + ... + 129900531.

It is an arithmetic number, because the mean of its divisors is an integer number (78053067947508).

Almost surely, 2^{312212013202031} is an apocalyptic number.

312212013202031 is a deficient number, since it is larger than the sum of its proper divisors (258588001).

312212013202031 is a wasteful number, since it uses less digits than its factorization.

312212013202031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258588000.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 312212013202031 its reverse (130202310212213), we get a palindrome (442414323414244).

The spelling of 312212013202031 in words is "three hundred twelve trillion, two hundred twelve billion, thirteen million, two hundred two thousand, thirty-one".