313312012031 has 4 divisors (see below), whose sum is σ = 320953768464. Its totient is φ = 305670255600.

The previous prime is 313312012019. The next prime is 313312012121. The reversal of 313312012031 is 130210213313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130210213313 = 13691 ⋅9510643.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313312012031 is a prime.

It is a super-2 number, since 2×313312012031² (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 = 313312011994 and 313312012012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313312011031) 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, 3820878155 + ... + 3820878236.

It is an arithmetic number, because the mean of its divisors is an integer number (80238442116).

Almost surely, 2^313312012031 is an apocalyptic number.

313312012031 is a deficient number, since it is larger than the sum of its proper divisors (7641756433).

313312012031 is an equidigital number, since it uses as much as digits as its factorization.

313312012031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7641756432.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 313312012031 its reverse (130210213313), we get a palindrome (443522225344).

The spelling of 313312012031 in words is "three hundred thirteen billion, three hundred twelve million, twelve thousand, thirty-one".