131005881406 has 32 divisors (see below), whose sum is σ = 208610756640. Its totient is φ = 61489268736.

The previous prime is 131005881323. The next prime is 131005881427. The reversal of 131005881406 is 604188500131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28809225 + ... + 28813771.

It is an arithmetic number, because the mean of its divisors is an integer number (6519086145).

Almost surely, 2^131005881406 is an apocalyptic number.

131005881406 is a deficient number, since it is larger than the sum of its proper divisors (77604875234).

131005881406 is a wasteful number, since it uses less digits than its factorization.

131005881406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6588.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 131005881406 in words is "one hundred thirty-one billion, five million, eight hundred eighty-one thousand, four hundred six".