313231147 has 2 divisors, whose sum is σ = 313231148. Its totient is φ = 313231146.

The previous prime is 313231133. The next prime is 313231153. The reversal of 313231147 is 741132313.

It is a strong prime.

It is an emirp because it is prime and its reverse (741132313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313231147 is a prime.

It is a super-2 number, since 2×313231147² = 196227502901871218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (313237147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156615573 + 156615574.

It is an arithmetic number, because the mean of its divisors is an integer number (156615574).

Almost surely, 2^313231147 is an apocalyptic number.

313231147 is a deficient number, since it is larger than the sum of its proper divisors (1).

313231147 is an equidigital number, since it uses as much as digits as its factorization.

313231147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 25.

The square root of 313231147 is about 17698.3374077906. The cubic root of 313231147 is about 679.1332288170.

The spelling of 313231147 in words is "three hundred thirteen million, two hundred thirty-one thousand, one hundred forty-seven".