213572431 has 2 divisors, whose sum is σ = 213572432. Its totient is φ = 213572430.

The previous prime is 213572419. The next prime is 213572441. The reversal of 213572431 is 134275312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213572431 - 2¹⁷ = 213441359 is a prime.

It is a super-2 number, since 2×213572431² = 91226366566499522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213572431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213572441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106786215 + 106786216.

It is an arithmetic number, because the mean of its divisors is an integer number (106786216).

Almost surely, 2^213572431 is an apocalyptic number.

213572431 is a deficient number, since it is larger than the sum of its proper divisors (1).

213572431 is an equidigital number, since it uses as much as digits as its factorization.

213572431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 213572431 is about 14614.1175238192. The cubic root of 213572431 is about 597.7437773260.

The spelling of 213572431 in words is "two hundred thirteen million, five hundred seventy-two thousand, four hundred thirty-one".