313434391 has 2 divisors, whose sum is σ = 313434392. Its totient is φ = 313434390.

The previous prime is 313434383. The next prime is 313434427. The reversal of 313434391 is 193434313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313434391 - 2³ = 313434383 is a prime.

It is a super-2 number, since 2×313434391² = 196482234923081762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313134391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156717195 + 156717196.

It is an arithmetic number, because the mean of its divisors is an integer number (156717196).

Almost surely, 2^313434391 is an apocalyptic number.

313434391 is a deficient number, since it is larger than the sum of its proper divisors (1).

313434391 is an equidigital number, since it uses as much as digits as its factorization.

313434391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 31.

The square root of 313434391 is about 17704.0783719458. The cubic root of 313434391 is about 679.2800851263.

The spelling of 313434391 in words is "three hundred thirteen million, four hundred thirty-four thousand, three hundred ninety-one".