214665431 has 2 divisors, whose sum is σ = 214665432. Its totient is φ = 214665430.

The previous prime is 214665397. The next prime is 214665461. The reversal of 214665431 is 134566412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 214665431 - 2²⁶ = 147556567 is a prime.

It is a super-2 number, since 2×214665431² = 92162494532831522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214665461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107332715 + 107332716.

It is an arithmetic number, because the mean of its divisors is an integer number (107332716).

Almost surely, 2^214665431 is an apocalyptic number.

214665431 is a deficient number, since it is larger than the sum of its proper divisors (1).

214665431 is an equidigital number, since it uses as much as digits as its factorization.

214665431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 32.

The square root of 214665431 is about 14651.4651485781. The cubic root of 214665431 is about 598.7617342174.

The spelling of 214665431 in words is "two hundred fourteen million, six hundred sixty-five thousand, four hundred thirty-one".