131401320444 has 30 divisors (see below), whose sum is σ = 343509008304. Its totient is φ = 43800440040.

The previous prime is 131401320439. The next prime is 131401320481. The reversal of 131401320444 is 444023104131.

131401320444 is a `hidden beast` number, since 13 + 1 + 401 + 3 + 204 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 202779492 + ... + 202780139.

Almost surely, 2^131401320444 is an apocalyptic number.

It is an amenable number.

131401320444 is an abundant number, since it is smaller than the sum of its proper divisors (212107687860).

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

131401320444 is a wasteful number, since it uses less digits than its factorization.

131401320444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405559647 (or 405559636 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 131401320444 its reverse (444023104131), we get a palindrome (575424424575).

The spelling of 131401320444 in words is "one hundred thirty-one billion, four hundred one million, three hundred twenty thousand, four hundred forty-four".