131456061641 has 4 divisors (see below), whose sum is σ = 132123351492. Its totient is φ = 130788771792.

The previous prime is 131456061631. The next prime is 131456061661. The reversal of 131456061641 is 146160654131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146160654131 = 103 ⋅1419035477.

It can be written as a sum of positive squares in 2 ways, for example, as 121619587600 + 9836474041 = 348740^2 + 99179^2 .

It is a cyclic number.

It is not a de Polignac number, because 131456061641 - 2¹⁴ = 131456045257 is a prime.

It is a super-2 number, since 2×131456061641² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131456061595 and 131456061604.

It is not an unprimeable number, because it can be changed into a prime (131456061631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333644630 + ... + 333645023.

It is an arithmetic number, because the mean of its divisors is an integer number (33030837873).

Almost surely, 2^131456061641 is an apocalyptic number.

It is an amenable number.

131456061641 is a deficient number, since it is larger than the sum of its proper divisors (667289851).

131456061641 is an equidigital number, since it uses as much as digits as its factorization.

131456061641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667289850.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 131456061641 in words is "one hundred thirty-one billion, four hundred fifty-six million, sixty-one thousand, six hundred forty-one".