131321432073 has 16 divisors (see below), whose sum is σ = 188571934656. Its totient is φ = 80809834560.

The previous prime is 131321432069. The next prime is 131321432089. The reversal of 131321432073 is 370234123131.

It is not a de Polignac number, because 131321432073 - 2² = 131321432069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131321432073.

It is not an unprimeable number, because it can be changed into a prime (131321432003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1152286 + ... + 1261112.

It is an arithmetic number, because the mean of its divisors is an integer number (11785745916).

Almost surely, 2^131321432073 is an apocalyptic number.

131321432073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131321432073 is a deficient number, since it is larger than the sum of its proper divisors (57250502583).

131321432073 is a wasteful number, since it uses less digits than its factorization.

131321432073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139784.

The product of its (nonzero) digits is 9072, while the sum is 30.

The spelling of 131321432073 in words is "one hundred thirty-one billion, three hundred twenty-one million, four hundred thirty-two thousand, seventy-three".