131120312321001 has 4 divisors (see below), whose sum is σ = 174827083094672. Its totient is φ = 87413541547332.

The previous prime is 131120312320997. The next prime is 131120312321021. The reversal of 131120312321001 is 100123213021131.

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 not a de Polignac number, because 131120312321001 - 2² = 131120312320997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131120312321021) 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, 21853385386831 + ... + 21853385386836.

It is an arithmetic number, because the mean of its divisors is an integer number (43706770773668).

Almost surely, 2^{131120312321001} is an apocalyptic number.

It is an amenable number.

131120312321001 is a deficient number, since it is larger than the sum of its proper divisors (43706770773671).

131120312321001 is an equidigital number, since it uses as much as digits as its factorization.

131120312321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43706770773670.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 131120312321001 its reverse (100123213021131), we get a palindrome (231243525342132).

The spelling of 131120312321001 in words is "one hundred thirty-one trillion, one hundred twenty billion, three hundred twelve million, three hundred twenty-one thousand, one".