456131321 has 4 divisors (see below), whose sum is σ = 456208500. Its totient is φ = 456054144.

The previous prime is 456131317. The next prime is 456131329. The reversal of 456131321 is 123131654.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123131654 = 2 ⋅61565827.

It can be written as a sum of positive squares in 2 ways, for example, as 382789225 + 73342096 = 19565^2 + 8564^2 .

It is a cyclic number.

It is not a de Polignac number, because 456131321 - 2² = 456131317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (456131329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28916 + ... + 41813.

It is an arithmetic number, because the mean of its divisors is an integer number (114052125).

Almost surely, 2^456131321 is an apocalyptic number.

It is an amenable number.

456131321 is a deficient number, since it is larger than the sum of its proper divisors (77179).

456131321 is an equidigital number, since it uses as much as digits as its factorization.

456131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77178.

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

The square root of 456131321 is about 21357.2311173523. The cubic root of 456131321 is about 769.7741064469.

Adding to 456131321 its reverse (123131654), we get a palindrome (579262975).

The spelling of 456131321 in words is "four hundred fifty-six million, one hundred thirty-one thousand, three hundred twenty-one".