431123431 has 8 divisors (see below), whose sum is σ = 456205824. Its totient is φ = 406569240.

The previous prime is 431123419. The next prime is 431123507. The reversal of 431123431 is 134321134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431123431 is a prime.

It is a super-2 number, since 2×431123431² = 371734825514423522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431123401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130371 + ... + 133636.

It is an arithmetic number, because the mean of its divisors is an integer number (57025728).

Almost surely, 2^431123431 is an apocalyptic number.

431123431 is a deficient number, since it is larger than the sum of its proper divisors (25082393).

431123431 is a wasteful number, since it uses less digits than its factorization.

431123431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264101.

The product of its digits is 864, while the sum is 22.

The square root of 431123431 is about 20763.5120102549. The cubic root of 431123431 is about 755.4409838440.

Adding to 431123431 its reverse (134321134), we get a palindrome (565444565).

The spelling of 431123431 in words is "four hundred thirty-one million, one hundred twenty-three thousand, four hundred thirty-one".