131120233141405 has 4 divisors (see below), whose sum is σ = 157344279769692. Its totient is φ = 104896186513120.

The previous prime is 131120233141397. The next prime is 131120233141409. The reversal of 131120233141405 is 504141332021131.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 49046308936249 + 82073924205156 = 7003307^2 + 9059466^2 .

It is not a de Polignac number, because 131120233141405 - 2³ = 131120233141397 is a prime.

It is a super-2 number, since 2×131120233141405² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131120233141409) 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, 13112023314136 + ... + 13112023314145.

It is an arithmetic number, because the mean of its divisors is an integer number (39336069942423).

Almost surely, 2^{131120233141405} is an apocalyptic number.

It is an amenable number.

131120233141405 is a deficient number, since it is larger than the sum of its proper divisors (26224046628287).

131120233141405 is an equidigital number, since it uses as much as digits as its factorization.

131120233141405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26224046628286.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 131120233141405 its reverse (504141332021131), we get a palindrome (635261565162536).

The spelling of 131120233141405 in words is "one hundred thirty-one trillion, one hundred twenty billion, two hundred thirty-three million, one hundred forty-one thousand, four hundred five".