313211230531 has 2 divisors, whose sum is σ = 313211230532. Its totient is φ = 313211230530.

The previous prime is 313211230517. The next prime is 313211230543. The reversal of 313211230531 is 135032112313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 313211230531 - 2⁷ = 313211230403 is a prime.

It is a super-2 number, since 2×313211230531² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313211230496 and 313211230505.

It is not a weakly prime, because it can be changed into another prime (313211230831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156605615265 + 156605615266.

It is an arithmetic number, because the mean of its divisors is an integer number (156605615266).

Almost surely, 2^313211230531 is an apocalyptic number.

313211230531 is a deficient number, since it is larger than the sum of its proper divisors (1).

313211230531 is an equidigital number, since it uses as much as digits as its factorization.

313211230531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

Adding to 313211230531 its reverse (135032112313), we get a palindrome (448243342844).

The spelling of 313211230531 in words is "three hundred thirteen billion, two hundred eleven million, two hundred thirty thousand, five hundred thirty-one".