313140031 has 2 divisors, whose sum is σ = 313140032. Its totient is φ = 313140030.

The previous prime is 313140029. The next prime is 313140041. The reversal of 313140031 is 130041313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313140031 - 2¹ = 313140029 is a prime.

It is a super-2 number, since 2×313140031² = 196113358029361922, which contains 22 as substring.

Together with 313140029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 313139987 and 313140014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313140011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156570015 + 156570016.

It is an arithmetic number, because the mean of its divisors is an integer number (156570016).

Almost surely, 2^313140031 is an apocalyptic number.

313140031 is a deficient number, since it is larger than the sum of its proper divisors (1).

313140031 is an equidigital number, since it uses as much as digits as its factorization.

313140031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 313140031 is about 17695.7630804665. The cubic root of 313140031 is about 679.0673712707.

Adding to 313140031 its reverse (130041313), we get a palindrome (443181344).

The spelling of 313140031 in words is "three hundred thirteen million, one hundred forty thousand, thirty-one".