253453431320 has 32 divisors (see below), whose sum is σ = 600284444400. Its totient is φ = 96045510528.

The previous prime is 253453431229. The next prime is 253453431323. The reversal of 253453431320 is 23134354352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253453431323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166744919 + ... + 166746438.

Almost surely, 2^253453431320 is an apocalyptic number.

253453431320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253453431320 is an abundant number, since it is smaller than the sum of its proper divisors (346831013080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253453431320 is a wasteful number, since it uses less digits than its factorization.

253453431320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333491387 (or 333491383 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 253453431320 its reverse (23134354352), we get a palindrome (276587785672).

The spelling of 253453431320 in words is "two hundred fifty-three billion, four hundred fifty-three million, four hundred thirty-one thousand, three hundred twenty".