311253623 has 2 divisors, whose sum is σ = 311253624. Its totient is φ = 311253622.

The previous prime is 311253617. The next prime is 311253643. The reversal of 311253623 is 326352113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311253623 - 2²⁰ = 310205047 is a prime.

It is a super-2 number, since 2×311253623² = 193757635661252258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 311253592 and 311253601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311253643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155626811 + 155626812.

It is an arithmetic number, because the mean of its divisors is an integer number (155626812).

Almost surely, 2^311253623 is an apocalyptic number.

311253623 is a deficient number, since it is larger than the sum of its proper divisors (1).

311253623 is an equidigital number, since it uses as much as digits as its factorization.

311253623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 26.

The square root of 311253623 is about 17642.3814435580. The cubic root of 311253623 is about 677.7010186765.

The spelling of 311253623 in words is "three hundred eleven million, two hundred fifty-three thousand, six hundred twenty-three".