131403434121 has 6 divisors (see below), whose sum is σ = 189804960410. Its totient is φ = 87602289408.

The previous prime is 131403434117. The next prime is 131403434143. The reversal of 131403434121 is 121434304131.

131403434121 is a `hidden beast` number, since 1 + 314 + 0 + 3 + 4 + 341 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 113087601225 + 18315832896 = 336285^2 + 135336^2 .

It is not a de Polignac number, because 131403434121 - 2² = 131403434117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131403434621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7300190776 + ... + 7300190793.

Almost surely, 2^131403434121 is an apocalyptic number.

It is an amenable number.

131403434121 is a deficient number, since it is larger than the sum of its proper divisors (58401526289).

131403434121 is a wasteful number, since it uses less digits than its factorization.

131403434121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14600381575 (or 14600381572 counting only the distinct ones).

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

Adding to 131403434121 its reverse (121434304131), we get a palindrome (252837738252).

The spelling of 131403434121 in words is "one hundred thirty-one billion, four hundred three million, four hundred thirty-four thousand, one hundred twenty-one".