131311130421 has 16 divisors (see below), whose sum is σ = 175239687168. Its totient is φ = 87461708400.

The previous prime is 131311130389. The next prime is 131311130449. The reversal of 131311130421 is 124031113131.

It is not a de Polignac number, because 131311130421 - 2⁵ = 131311130389 is a prime.

It is a super-2 number, since 2×131311130421² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131311134421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25099876 + ... + 25105106.

It is an arithmetic number, because the mean of its divisors is an integer number (10952480448).

Almost surely, 2^131311130421 is an apocalyptic number.

It is an amenable number.

131311130421 is a deficient number, since it is larger than the sum of its proper divisors (43928556747).

131311130421 is a wasteful number, since it uses less digits than its factorization.

131311130421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11192.

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

Adding to 131311130421 its reverse (124031113131), we get a palindrome (255342243552).

The spelling of 131311130421 in words is "one hundred thirty-one billion, three hundred eleven million, one hundred thirty thousand, four hundred twenty-one".