131398988533 has 8 divisors (see below), whose sum is σ = 134766758016. Its totient is φ = 128045400000.

The previous prime is 131398988507. The next prime is 131398988551. The reversal of 131398988533 is 335889893131.

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

It is a de Polignac number, because none of the positive numbers 2^k-131398988533 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 (131398988593) 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, 3526468 + ... + 3563533.

It is an arithmetic number, because the mean of its divisors is an integer number (16845844752).

Almost surely, 2^131398988533 is an apocalyptic number.

It is an amenable number.

131398988533 is a deficient number, since it is larger than the sum of its proper divisors (3367769483).

131398988533 is an equidigital number, since it uses as much as digits as its factorization.

131398988533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7090475.

The product of its digits is 16796160, while the sum is 61.

The spelling of 131398988533 in words is "one hundred thirty-one billion, three hundred ninety-eight million, nine hundred eighty-eight thousand, five hundred thirty-three".