312213110312031 has 4 divisors (see below), whose sum is σ = 416284147082712. Its totient is φ = 208142073541352.

The previous prime is 312213110312023. The next prime is 312213110312057. The reversal of 312213110312031 is 130213011312213.

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 312213110312031 - 2³ = 312213110312023 is a prime.

It is a super-2 number, since 2×312213110312031² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312213110311992 and 312213110312010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312213110312431) 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, 52035518385336 + ... + 52035518385341.

It is an arithmetic number, because the mean of its divisors is an integer number (104071036770678).

Almost surely, 2^{312213110312031} is an apocalyptic number.

312213110312031 is a deficient number, since it is larger than the sum of its proper divisors (104071036770681).

312213110312031 is a wasteful number, since it uses less digits than its factorization.

312213110312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104071036770680.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 312213110312031 its reverse (130213011312213), we get a palindrome (442426121624244).

The spelling of 312213110312031 in words is "three hundred twelve trillion, two hundred thirteen billion, one hundred ten million, three hundred twelve thousand, thirty-one".