131403400534531 has 2 divisors, whose sum is σ = 131403400534532. Its totient is φ = 131403400534530.

The previous prime is 131403400534489. The next prime is 131403400534561. The reversal of 131403400534531 is 135435004304131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131403400534531 - 2⁹ = 131403400534019 is a prime.

It is a super-2 number, since 2×131403400534531² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131403400534561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65701700267265 + 65701700267266.

It is an arithmetic number, because the mean of its divisors is an integer number (65701700267266).

Almost surely, 2^{131403400534531} is an apocalyptic number.

131403400534531 is a deficient number, since it is larger than the sum of its proper divisors (1).

131403400534531 is an equidigital number, since it uses as much as digits as its factorization.

131403400534531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 131403400534531 its reverse (135435004304131), we get a palindrome (266838404838662).

The spelling of 131403400534531 in words is "one hundred thirty-one trillion, four hundred three billion, four hundred million, five hundred thirty-four thousand, five hundred thirty-one".