461312531 has 2 divisors, whose sum is σ = 461312532. Its totient is φ = 461312530.

The previous prime is 461312513. The next prime is 461312549. The reversal of 461312531 is 135213164.

Together with previous prime (461312513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (461312513) and next prime (461312549).

It is a cyclic number.

It is not a de Polignac number, because 461312531 - 2²² = 457118227 is a prime.

It is a super-2 number, since 2×461312531² = 425618502515251922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 461312531.

It is not a weakly prime, because it can be changed into another prime (461312591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230656265 + 230656266.

It is an arithmetic number, because the mean of its divisors is an integer number (230656266).

Almost surely, 2^461312531 is an apocalyptic number.

461312531 is a deficient number, since it is larger than the sum of its proper divisors (1).

461312531 is an equidigital number, since it uses as much as digits as its factorization.

461312531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 461312531 is about 21478.1873304057. The cubic root of 461312531 is about 772.6777691936.

Adding to 461312531 its reverse (135213164), we get a palindrome (596525695).

The spelling of 461312531 in words is "four hundred sixty-one million, three hundred twelve thousand, five hundred thirty-one".