131490811486901 has 4 divisors (see below), whose sum is σ = 131490912971052. Its totient is φ = 131490710002752.

The previous prime is 131490811486891. The next prime is 131490811486927. The reversal of 131490811486901 is 109684118094131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76317870720100 + 55172940766801 = 8736010^2 + 7427849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131490811486901 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 (131490811486961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48773090 + ... + 51398403.

It is an arithmetic number, because the mean of its divisors is an integer number (32872728242763).

Almost surely, 2^{131490811486901} is an apocalyptic number.

It is an amenable number.

131490811486901 is a deficient number, since it is larger than the sum of its proper divisors (101484151).

131490811486901 is a wasteful number, since it uses less digits than its factorization.

131490811486901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101484150.

The product of its (nonzero) digits is 1492992, while the sum is 56.

The spelling of 131490811486901 in words is "one hundred thirty-one trillion, four hundred ninety billion, eight hundred eleven million, four hundred eighty-six thousand, nine hundred one".