253412321 has 8 divisors (see below), whose sum is σ = 272961024. Its totient is φ = 234574560.

The previous prime is 253412317. The next prime is 253412347. The reversal of 253412321 is 123214352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253412321 - 2² = 253412317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253412521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176996 + ... + 178421.

It is an arithmetic number, because the mean of its divisors is an integer number (34120128).

Almost surely, 2^253412321 is an apocalyptic number.

It is an amenable number.

253412321 is a deficient number, since it is larger than the sum of its proper divisors (19548703).

253412321 is a wasteful number, since it uses less digits than its factorization.

253412321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355471.

The product of its digits is 1440, while the sum is 23.

The square root of 253412321 is about 15918.9296436664. The cubic root of 253412321 is about 632.8137525893.

Adding to 253412321 its reverse (123214352), we get a palindrome (376626673).

The spelling of 253412321 in words is "two hundred fifty-three million, four hundred twelve thousand, three hundred twenty-one".