450531131 has 2 divisors, whose sum is σ = 450531132. Its totient is φ = 450531130.

The previous prime is 450531079. The next prime is 450531181. The reversal of 450531131 is 131135054.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450531131 is a prime.

It is a super-2 number, since 2×450531131² = 405956600000278322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 450531097 and 450531106.

It is not a weakly prime, because it can be changed into another prime (450531181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225265565 + 225265566.

It is an arithmetic number, because the mean of its divisors is an integer number (225265566).

Almost surely, 2^450531131 is an apocalyptic number.

450531131 is a deficient number, since it is larger than the sum of its proper divisors (1).

450531131 is an equidigital number, since it uses as much as digits as its factorization.

450531131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 450531131 is about 21225.7186215214. The cubic root of 450531131 is about 766.6108032600.

Adding to 450531131 its reverse (131135054), we get a palindrome (581666185).

The spelling of 450531131 in words is "four hundred fifty million, five hundred thirty-one thousand, one hundred thirty-one".