253231340 has 48 divisors (see below), whose sum is σ = 545287680. Its totient is φ = 98754240.

The previous prime is 253231331. The next prime is 253231351. The reversal of 253231340 is 43132352.

It is a super-2 number, since 2×253231340² = 128252223116391200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130175 + ... + 132105.

It is an arithmetic number, because the mean of its divisors is an integer number (11360160).

Almost surely, 2^253231340 is an apocalyptic number.

253231340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253231340 is an abundant number, since it is smaller than the sum of its proper divisors (292056340).

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

253231340 is a wasteful number, since it uses less digits than its factorization.

253231340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102 (or 2100 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 253231340 is about 15913.2441695589. The cubic root of 253231340 is about 632.6630699122.

Adding to 253231340 its reverse (43132352), we get a palindrome (296363692).

The spelling of 253231340 in words is "two hundred fifty-three million, two hundred thirty-one thousand, three hundred forty".