131320221001031 has 8 divisors (see below), whose sum is σ = 133038782191584. Its totient is φ = 129609862967200.

The previous prime is 131320221001003. The next prime is 131320221001049. The reversal of 131320221001031 is 130100122023131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131320221001031 is a prime.

It is a super-2 number, since 2×131320221001031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131320221000994 and 131320221001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131320221001001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2050756955 + ... + 2050820988.

It is an arithmetic number, because the mean of its divisors is an integer number (16629847773948).

Almost surely, 2^{131320221001031} is an apocalyptic number.

131320221001031 is a deficient number, since it is larger than the sum of its proper divisors (1718561190553).

131320221001031 is a wasteful number, since it uses less digits than its factorization.

131320221001031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101578361.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 131320221001031 its reverse (130100122023131), we get a palindrome (261420343024162).

It can be divided in two parts, 13132022100 and 1031, that added together give a palindrome (13132023131).

The spelling of 131320221001031 in words is "one hundred thirty-one trillion, three hundred twenty billion, two hundred twenty-one million, one thousand, thirty-one".