131143304421 has 80 divisors (see below), whose sum is σ = 206653431600. Its totient is φ = 82771476480.

The previous prime is 131143304407. The next prime is 131143304497. The reversal of 131143304421 is 124403341131.

131143304421 is a `hidden beast` number, since 1 + 311 + 4 + 3 + 304 + 42 + 1 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 341732196 + 130801572225 = 18486^2 + 361665^2 .

It is not a de Polignac number, because 131143304421 - 2¹⁵ = 131143271653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131143304821) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 55170585 + ... + 55172961.

It is an arithmetic number, because the mean of its divisors is an integer number (2583167895).

Almost surely, 2^131143304421 is an apocalyptic number.

It is an amenable number.

131143304421 is a deficient number, since it is larger than the sum of its proper divisors (75510127179).

131143304421 is a wasteful number, since it uses less digits than its factorization.

131143304421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916 (or 2907 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 131143304421 its reverse (124403341131), we get a palindrome (255546645552).

The spelling of 131143304421 in words is "one hundred thirty-one billion, one hundred forty-three million, three hundred four thousand, four hundred twenty-one".