131254195243 has 16 divisors (see below), whose sum is σ = 139730572800. Its totient is φ = 123022324480.

The previous prime is 131254195217. The next prime is 131254195249. The reversal of 131254195243 is 342591452131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131254195243 - 2²¹ = 131252098091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131254195196 and 131254195205.

It is not an unprimeable number, because it can be changed into a prime (131254195249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266523 + ... + 577531.

It is an arithmetic number, because the mean of its divisors is an integer number (8733160800).

Almost surely, 2^131254195243 is an apocalyptic number.

131254195243 is a deficient number, since it is larger than the sum of its proper divisors (8476377557).

131254195243 is a wasteful number, since it uses less digits than its factorization.

131254195243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311402.

The product of its digits is 129600, while the sum is 40.

The spelling of 131254195243 in words is "one hundred thirty-one billion, two hundred fifty-four million, one hundred ninety-five thousand, two hundred forty-three".