131436457 has 2 divisors, whose sum is σ = 131436458. Its totient is φ = 131436456.

The previous prime is 131436443. The next prime is 131436463. The reversal of 131436457 is 754634131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79941481 + 51494976 = 8941^2 + 7176^2 .

It is a cyclic number.

It is not a de Polignac number, because 131436457 - 2¹⁵ = 131403689 is a prime.

It is equal to p_7455094 and since 131436457 and 7455094 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (131436157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65718228 + 65718229.

It is an arithmetic number, because the mean of its divisors is an integer number (65718229).

Almost surely, 2^131436457 is an apocalyptic number.

It is an amenable number.

131436457 is a deficient number, since it is larger than the sum of its proper divisors (1).

131436457 is an equidigital number, since it uses as much as digits as its factorization.

131436457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 131436457 is about 11464.5739999356. The cubic root of 131436457 is about 508.4387175102.

It can be divided in two parts, 13143 and 6457, that added together give a square (19600 = 140²).

The spelling of 131436457 in words is "one hundred thirty-one million, four hundred thirty-six thousand, four hundred fifty-seven".