311325163 has 2 divisors, whose sum is σ = 311325164. Its totient is φ = 311325162.

The previous prime is 311325149. The next prime is 311325169. The reversal of 311325163 is 361523113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311325163 is a prime.

It is a super-3 number, since 3×311325163³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (311325169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155662581 + 155662582.

It is an arithmetic number, because the mean of its divisors is an integer number (155662582).

Almost surely, 2^311325163 is an apocalyptic number.

311325163 is a deficient number, since it is larger than the sum of its proper divisors (1).

311325163 is an equidigital number, since it uses as much as digits as its factorization.

311325163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 25.

The square root of 311325163 is about 17644.4088311283. The cubic root of 311325163 is about 677.7529366979.

Adding to 311325163 its reverse (361523113), we get a palindrome (672848276).

The spelling of 311325163 in words is "three hundred eleven million, three hundred twenty-five thousand, one hundred sixty-three".