231420434454513 has 48 divisors (see below), whose sum is σ = 365877735903680. Its totient is φ = 145768422705984.

The previous prime is 231420434454499. The next prime is 231420434454563. The reversal of 231420434454513 is 315454434024132.

It is a happy number.

231420434454513 is a `hidden beast` number, since 2 + 3 + 1 + 4 + 2 + 0 + 43 + 44 + 54 + 513 = 666.

It is not a de Polignac number, because 231420434454513 - 2²⁴ = 231420417677297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231420434454563) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65467606 + ... + 68911887.

Almost surely, 2^{231420434454513} is an apocalyptic number.

It is an amenable number.

231420434454513 is a deficient number, since it is larger than the sum of its proper divisors (134457301449167).

231420434454513 is a wasteful number, since it uses less digits than its factorization.

231420434454513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134379900 (or 134379888 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 45.

Adding to 231420434454513 its reverse (315454434024132), we get a palindrome (546874868478645).

The spelling of 231420434454513 in words is "two hundred thirty-one trillion, four hundred twenty billion, four hundred thirty-four million, four hundred fifty-four thousand, five hundred thirteen".