431390097 has 16 divisors (see below), whose sum is σ = 639756480. Its totient is φ = 287296416.

The previous prime is 431390083. The next prime is 431390101. The reversal of 431390097 is 790093134.

It is not a de Polignac number, because 431390097 - 2⁶ = 431390033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (431390027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20158 + ... + 35624.

It is an arithmetic number, because the mean of its divisors is an integer number (39984780).

Almost surely, 2^431390097 is an apocalyptic number.

It is an amenable number.

431390097 is a deficient number, since it is larger than the sum of its proper divisors (208366383).

431390097 is a wasteful number, since it uses less digits than its factorization.

431390097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16509 (or 16503 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 431390097 is about 20769.9325227599. The cubic root of 431390097 is about 755.5967079285.

The spelling of 431390097 in words is "four hundred thirty-one million, three hundred ninety thousand, ninety-seven".