313039081 has 2 divisors, whose sum is σ = 313039082. Its totient is φ = 313039080.

The previous prime is 313039063. The next prime is 313039099. The reversal of 313039081 is 180930313.

It is a balanced prime because it is at equal distance from previous prime (313039063) and next prime (313039099).

It can be written as a sum of positive squares in only one way, i.e., 312971481 + 67600 = 17691^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 313039081 - 2⁵ = 313039049 is a prime.

It is a super-2 number, since 2×313039081² = 195986932466649122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (313039061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156519540 + 156519541.

It is an arithmetic number, because the mean of its divisors is an integer number (156519541).

Almost surely, 2^313039081 is an apocalyptic number.

It is an amenable number.

313039081 is a deficient number, since it is larger than the sum of its proper divisors (1).

313039081 is an equidigital number, since it uses as much as digits as its factorization.

313039081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 313039081 is about 17692.9104728419. The cubic root of 313039081 is about 678.9943909080.

Adding to 313039081 its reverse (180930313), we get a palindrome (493969394).

The spelling of 313039081 in words is "three hundred thirteen million, thirty-nine thousand, eighty-one".