464131531 has 4 divisors (see below), whose sum is σ = 464174712. Its totient is φ = 464088352.

The previous prime is 464131511. The next prime is 464131553. The reversal of 464131531 is 135131464.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 464131531 - 2¹¹ = 464129483 is a prime.

It is a super-2 number, since 2×464131531² = 430836156136807922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 464131531.

It is not an unprimeable number, because it can be changed into a prime (464131511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8676 + ... + 31678.

It is an arithmetic number, because the mean of its divisors is an integer number (116043678).

Almost surely, 2^464131531 is an apocalyptic number.

464131531 is a deficient number, since it is larger than the sum of its proper divisors (43181).

464131531 is a wasteful number, since it uses less digits than its factorization.

464131531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43180.

The product of its digits is 4320, while the sum is 28.

The square root of 464131531 is about 21543.7120988933. The cubic root of 464131531 is about 774.2484735529.

Adding to 464131531 its reverse (135131464), we get a palindrome (599262995).

The spelling of 464131531 in words is "four hundred sixty-four million, one hundred thirty-one thousand, five hundred thirty-one".