313021097 has 2 divisors, whose sum is σ = 313021098. Its totient is φ = 313021096.

The previous prime is 313021069. The next prime is 313021129. The reversal of 313021097 is 790120313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209062681 + 103958416 = 14459^2 + 10196^2 .

It is a cyclic number.

It is not a de Polignac number, because 313021097 - 2¹⁶ = 312955561 is a prime.

It is not a weakly prime, because it can be changed into another prime (313021057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156510548 + 156510549.

It is an arithmetic number, because the mean of its divisors is an integer number (156510549).

Almost surely, 2^313021097 is an apocalyptic number.

It is an amenable number.

313021097 is a deficient number, since it is larger than the sum of its proper divisors (1).

313021097 is an equidigital number, since it uses as much as digits as its factorization.

313021097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 313021097 is about 17692.4022393795. The cubic root of 313021097 is about 678.9813879853.

The spelling of 313021097 in words is "three hundred thirteen million, twenty-one thousand, ninety-seven".