312331051 has 2 divisors, whose sum is σ = 312331052. Its totient is φ = 312331050.

The previous prime is 312331049. The next prime is 312331057. The reversal of 312331051 is 150133213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312331051 - 2¹ = 312331049 is a prime.

Together with 312331049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (312331057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156165525 + 156165526.

It is an arithmetic number, because the mean of its divisors is an integer number (156165526).

Almost surely, 2^312331051 is an apocalyptic number.

312331051 is a deficient number, since it is larger than the sum of its proper divisors (1).

312331051 is an equidigital number, since it uses as much as digits as its factorization.

312331051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 312331051 is about 17672.8902842744. The cubic root of 312331051 is about 678.4820892656.

Adding to 312331051 its reverse (150133213), we get a palindrome (462464264).

The spelling of 312331051 in words is "three hundred twelve million, three hundred thirty-one thousand, fifty-one".