253343234421 has 12 divisors (see below), whose sum is σ = 365946799660. Its totient is φ = 168892456320.

The previous prime is 253343234327. The next prime is 253343234423. The reversal of 253343234421 is 124432343352.

253343234421 is a `hidden beast` number, since 2 + 533 + 43 + 23 + 44 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 134241632100 + 119101602321 = 366390^2 + 345111^2 .

It is not a de Polignac number, because 253343234421 - 2³⁰ = 252269492597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253343234423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352461 + ... + 794301.

Almost surely, 2^253343234421 is an apocalyptic number.

It is an amenable number.

253343234421 is a deficient number, since it is larger than the sum of its proper divisors (112603565239).

253343234421 is a wasteful number, since it uses less digits than its factorization.

253343234421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505556 (or 505553 counting only the distinct ones).

The product of its digits is 207360, while the sum is 36.

Adding to 253343234421 its reverse (124432343352), we get a palindrome (377775577773).

The spelling of 253343234421 in words is "two hundred fifty-three billion, three hundred forty-three million, two hundred thirty-four thousand, four hundred twenty-one".