131043040644 has 12 divisors (see below), whose sum is σ = 305767094864. Its totient is φ = 43681013544.

The previous prime is 131043040633. The next prime is 131043040699. The reversal of 131043040644 is 446040340131.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5460126682 + ... + 5460126705.

Almost surely, 2^131043040644 is an apocalyptic number.

It is an amenable number.

131043040644 is an abundant number, since it is smaller than the sum of its proper divisors (174724054220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131043040644 is a wasteful number, since it uses less digits than its factorization.

131043040644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10920253394 (or 10920253392 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 131043040644 its reverse (446040340131), we get a palindrome (577083380775).

The spelling of 131043040644 in words is "one hundred thirty-one billion, forty-three million, forty thousand, six hundred forty-four".