210312131 has 2 divisors, whose sum is σ = 210312132. Its totient is φ = 210312130.

The previous prime is 210312101. The next prime is 210312133. The reversal of 210312131 is 131213012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210312131 - 2¹⁴ = 210295747 is a prime.

It is a super-2 number, since 2×210312131² = 88462384891522322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 210312133, 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 (210312133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105156065 + 105156066.

It is an arithmetic number, because the mean of its divisors is an integer number (105156066).

Almost surely, 2^210312131 is an apocalyptic number.

210312131 is a deficient number, since it is larger than the sum of its proper divisors (1).

210312131 is an equidigital number, since it uses as much as digits as its factorization.

210312131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 210312131 is about 14502.1422900205. The cubic root of 210312131 is about 594.6865387476.

Adding to 210312131 its reverse (131213012), we get a palindrome (341525143).

The spelling of 210312131 in words is "two hundred ten million, three hundred twelve thousand, one hundred thirty-one".