131403333340021 has 4 divisors (see below), whose sum is σ = 131654582543872. Its totient is φ = 131152084136172.

The previous prime is 131403333340009. The next prime is 131403333340033. The reversal of 131403333340021 is 120043333304131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (131403333340009) and next prime (131403333340033).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131403333340021 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 (131403333340121) 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 3 ways as a sum of consecutive naturals, for example, 125624601141 + ... + 125624602186.

It is an arithmetic number, because the mean of its divisors is an integer number (32913645635968).

Almost surely, 2^{131403333340021} is an apocalyptic number.

It is an amenable number.

131403333340021 is a deficient number, since it is larger than the sum of its proper divisors (251249203851).

131403333340021 is an equidigital number, since it uses as much as digits as its factorization.

131403333340021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251249203850.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 131403333340021 its reverse (120043333304131), we get a palindrome (251446666644152).

The spelling of 131403333340021 in words is "one hundred thirty-one trillion, four hundred three billion, three hundred thirty-three million, three hundred forty thousand, twenty-one".