131400761 has 2 divisors, whose sum is σ = 131400762. Its totient is φ = 131400760.

The previous prime is 131400739. The next prime is 131400791. The reversal of 131400761 is 167004131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116532025 + 14868736 = 10795^2 + 3856^2 .

It is a cyclic number.

It is not a de Polignac number, because 131400761 - 2²⁶ = 64291897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131400791) 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 as a sum of consecutive naturals, namely, 65700380 + 65700381.

It is an arithmetic number, because the mean of its divisors is an integer number (65700381).

Almost surely, 2^131400761 is an apocalyptic number.

It is an amenable number.

131400761 is a deficient number, since it is larger than the sum of its proper divisors (1).

131400761 is an equidigital number, since it uses as much as digits as its factorization.

131400761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 131400761 is about 11463.0170984780. The cubic root of 131400761 is about 508.3926854525.

Adding to 131400761 its reverse (167004131), we get a palindrome (298404892).

The spelling of 131400761 in words is "one hundred thirty-one million, four hundred thousand, seven hundred sixty-one".