131404562 has 12 divisors (see below), whose sum is σ = 198254238. Its totient is φ = 65322000.

The previous prime is 131404547. The next prime is 131404601. The reversal of 131404562 is 265404131.

It can be written as a sum of positive squares in only one way, i.e., 126990361 + 4414201 = 11269^2 + 2101^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 72062 + ... + 73862.

Almost surely, 2^131404562 is an apocalyptic number.

131404562 is a deficient number, since it is larger than the sum of its proper divisors (66849676).

131404562 is an equidigital number, since it uses as much as digits as its factorization.

131404562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185 (or 1994 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 131404562 is about 11463.1828913265. The cubic root of 131404562 is about 508.3975874585.

Adding to 131404562 its reverse (265404131), we get a palindrome (396808693).

The spelling of 131404562 in words is "one hundred thirty-one million, four hundred four thousand, five hundred sixty-two".