313939133 has 2 divisors, whose sum is σ = 313939134. Its totient is φ = 313939132.

The previous prime is 313939099. The next prime is 313939151. The reversal of 313939133 is 331939313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309830404 + 4108729 = 17602^2 + 2027^2 .

It is a cyclic number.

It is not a de Polignac number, because 313939133 - 2⁶ = 313939069 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 313939093 and 313939102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313939183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156969566 + 156969567.

It is an arithmetic number, because the mean of its divisors is an integer number (156969567).

Almost surely, 2^313939133 is an apocalyptic number.

It is an amenable number.

313939133 is a deficient number, since it is larger than the sum of its proper divisors (1).

313939133 is an equidigital number, since it uses as much as digits as its factorization.

313939133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19683, while the sum is 35.

The square root of 313939133 is about 17718.3276016672. The cubic root of 313939133 is about 679.6445179175.

The spelling of 313939133 in words is "three hundred thirteen million, nine hundred thirty-nine thousand, one hundred thirty-three".