431020431 has 12 divisors (see below), whose sum is σ = 659207952. Its totient is φ = 270444096.

The previous prime is 431020423. The next prime is 431020451. The reversal of 431020431 is 134020134.

431020431 is a `hidden beast` number, since 431 + 0 + 204 + 31 = 666.

It is not a de Polignac number, because 431020431 - 2³ = 431020423 is a prime.

It is a super-2 number, since 2×431020431² = 371557223878851522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431020451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1408411 + ... + 1408716.

It is an arithmetic number, because the mean of its divisors is an integer number (54933996).

Almost surely, 2^431020431 is an apocalyptic number.

431020431 is a deficient number, since it is larger than the sum of its proper divisors (228187521).

431020431 is a wasteful number, since it uses less digits than its factorization.

431020431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817150 (or 2817147 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 431020431 is about 20761.0315495160. The cubic root of 431020431 is about 755.3808180747.

Adding to 431020431 its reverse (134020134), we get a palindrome (565040565).

The spelling of 431020431 in words is "four hundred thirty-one million, twenty thousand, four hundred thirty-one".