131313021334031 has 4 divisors (see below), whose sum is σ = 135548925248064. Its totient is φ = 127077117420000.

The previous prime is 131313021334007. The next prime is 131313021334057. The reversal of 131313021334031 is 130433120313131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131313021334031 is a prime.

It is a super-2 number, since 2×131313021334031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131313021333985 and 131313021334003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131313021334331) 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, 2117951956970 + ... + 2117951957031.

It is an arithmetic number, because the mean of its divisors is an integer number (33887231312016).

Almost surely, 2^{131313021334031} is an apocalyptic number.

131313021334031 is a deficient number, since it is larger than the sum of its proper divisors (4235903914033).

131313021334031 is an equidigital number, since it uses as much as digits as its factorization.

131313021334031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4235903914032.

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 131313021334031 its reverse (130433120313131), we get a palindrome (261746141647162).

The spelling of 131313021334031 in words is "one hundred thirty-one trillion, three hundred thirteen billion, twenty-one million, three hundred thirty-four thousand, thirty-one".