131245431749 has 8 divisors (see below), whose sum is σ = 134303912160. Its totient is φ = 128187236016.

The previous prime is 131245431703. The next prime is 131245431767. The reversal of 131245431749 is 947134542131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131245431749 - 2²⁴ = 131228654533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131245433749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073642 + ... + 1189620.

It is an arithmetic number, because the mean of its divisors is an integer number (16787989020).

Almost surely, 2^131245431749 is an apocalyptic number.

It is an amenable number.

131245431749 is a deficient number, since it is larger than the sum of its proper divisors (3058480411).

131245431749 is a wasteful number, since it uses less digits than its factorization.

131245431749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142339.

The product of its digits is 362880, while the sum is 44.

The spelling of 131245431749 in words is "one hundred thirty-one billion, two hundred forty-five million, four hundred thirty-one thousand, seven hundred forty-nine".