210342131 has 2 divisors, whose sum is σ = 210342132. Its totient is φ = 210342130.

The previous prime is 210342101. The next prime is 210342137. The reversal of 210342131 is 131243012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210342131 - 2¹⁴ = 210325747 is a prime.

It is a super-2 number, since 2×210342131² = 88487624147242322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (210342137) 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, 105171065 + 105171066.

It is an arithmetic number, because the mean of its divisors is an integer number (105171066).

Almost surely, 2^210342131 is an apocalyptic number.

210342131 is a deficient number, since it is larger than the sum of its proper divisors (1).

210342131 is an equidigital number, since it uses as much as digits as its factorization.

210342131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 210342131 is about 14503.1765830800. The cubic root of 210342131 is about 594.7148137815.

Adding to 210342131 its reverse (131243012), we get a palindrome (341585143).

The spelling of 210342131 in words is "two hundred ten million, three hundred forty-two thousand, one hundred thirty-one".