311100131 has 2 divisors, whose sum is σ = 311100132. Its totient is φ = 311100130.

The previous prime is 311100113. The next prime is 311100133. The reversal of 311100131 is 131001113.

It is a happy number.

Together with previous prime (311100113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (131001113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311100131 - 2²² = 306905827 is a prime.

It is a super-2 number, since 2×311100131² = 193566583016434322, which contains 22 as substring.

Together with 311100133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (311100133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155550065 + 155550066.

It is an arithmetic number, because the mean of its divisors is an integer number (155550066).

Almost surely, 2^311100131 is an apocalyptic number.

311100131 is a deficient number, since it is larger than the sum of its proper divisors (1).

311100131 is an equidigital number, since it uses as much as digits as its factorization.

311100131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 311100131 is about 17638.0308141243. The cubic root of 311100131 is about 677.5895995840.

Adding to 311100131 its reverse (131001113), we get a palindrome (442101244).

The spelling of 311100131 in words is "three hundred eleven million, one hundred thousand, one hundred thirty-one".