313021069 has 2 divisors, whose sum is σ = 313021070. Its totient is φ = 313021068.

The previous prime is 313021063. The next prime is 313021097. The reversal of 313021069 is 960120313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208224900 + 104796169 = 14430^2 + 10237^2 .

It is a cyclic number.

It is not a de Polignac number, because 313021069 - 2⁷ = 313020941 is a prime.

It is a super-2 number, since 2×313021069² = 195964379275805522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313021063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156510534 + 156510535.

It is an arithmetic number, because the mean of its divisors is an integer number (156510535).

Almost surely, 2^313021069 is an apocalyptic number.

It is an amenable number.

313021069 is a deficient number, since it is larger than the sum of its proper divisors (1).

313021069 is an equidigital number, since it uses as much as digits as its factorization.

313021069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 313021069 is about 17692.4014480793. The cubic root of 313021069 is about 678.9813677401.

The spelling of 313021069 in words is "three hundred thirteen million, twenty-one thousand, sixty-nine".