131141232411421 has 4 divisors (see below), whose sum is σ = 134339799055644. Its totient is φ = 127942665767200.

The previous prime is 131141232411391. The next prime is 131141232411521. The reversal of 131141232411421 is 124114232141131.

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 4542482316100 + 126598750095321 = 2131310^2 + 11251611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131141232411421 is a prime.

It is a super-2 number, since 2×131141232411421² (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 (131141232411221) 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, 1599283322050 + ... + 1599283322131.

It is an arithmetic number, because the mean of its divisors is an integer number (33584949763911).

Almost surely, 2^{131141232411421} is an apocalyptic number.

It is an amenable number.

131141232411421 is a deficient number, since it is larger than the sum of its proper divisors (3198566644223).

131141232411421 is an equidigital number, since it uses as much as digits as its factorization.

131141232411421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198566644222.

The product of its digits is 4608, while the sum is 31.

Adding to 131141232411421 its reverse (124114232141131), we get a palindrome (255255464552552).

The spelling of 131141232411421 in words is "one hundred thirty-one trillion, one hundred forty-one billion, two hundred thirty-two million, four hundred eleven thousand, four hundred twenty-one".