311455423 has 2 divisors, whose sum is σ = 311455424. Its totient is φ = 311455422.

The previous prime is 311455409. The next prime is 311455427. The reversal of 311455423 is 324554113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311455423 - 2²¹ = 309358271 is a prime.

It is a super-2 number, since 2×311455423² = 194008961032217858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311455391 and 311455400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311455427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155727711 + 155727712.

It is an arithmetic number, because the mean of its divisors is an integer number (155727712).

Almost surely, 2^311455423 is an apocalyptic number.

311455423 is a deficient number, since it is larger than the sum of its proper divisors (1).

311455423 is an equidigital number, since it uses as much as digits as its factorization.

311455423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 311455423 is about 17648.0996994011. The cubic root of 311455423 is about 677.8474485867.

The spelling of 311455423 in words is "three hundred eleven million, four hundred fifty-five thousand, four hundred twenty-three".