131403354545021 has 16 divisors (see below), whose sum is σ = 141650592894720. Its totient is φ = 121176032554560.

The previous prime is 131403354544997. The next prime is 131403354545039. The reversal of 131403354545021 is 120545453304131.

It is a cyclic number.

It is not a de Polignac number, because 131403354545021 - 2²² = 131403350350717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131403354545021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131403354545321) 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, 177290876 + ... + 178030506.

It is an arithmetic number, because the mean of its divisors is an integer number (8853162055920).

Almost surely, 2^{131403354545021} is an apocalyptic number.

It is an amenable number.

131403354545021 is a deficient number, since it is larger than the sum of its proper divisors (10247238349699).

131403354545021 is a wasteful number, since it uses less digits than its factorization.

131403354545021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753076.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 131403354545021 in words is "one hundred thirty-one trillion, four hundred three billion, three hundred fifty-four million, five hundred forty-five thousand, twenty-one".