131403323300521 has 6 divisors (see below), whose sum is σ = 134530281780090. Its totient is φ = 128347432059168.

The previous prime is 131403323300443. The next prime is 131403323300533. The reversal of 131403323300521 is 125003323304131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 82044900242496 + 49358423058025 = 9057864^2 + 7025555^2 .

It is not a de Polignac number, because 131403323300521 - 2⁷ = 131403323300393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131403323370521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35533617216 + ... + 35533620913.

It is an arithmetic number, because the mean of its divisors is an integer number (22421713630015).

Almost surely, 2^{131403323300521} is an apocalyptic number.

It is an amenable number.

131403323300521 is a deficient number, since it is larger than the sum of its proper divisors (3126958479569).

131403323300521 is an frugal number, since it uses more digits than its factorization.

131403323300521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71067238215 (or 71067238172 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

Adding to 131403323300521 its reverse (125003323304131), we get a palindrome (256406646604652).

The spelling of 131403323300521 in words is "one hundred thirty-one trillion, four hundred three billion, three hundred twenty-three million, three hundred thousand, five hundred twenty-one".