253240344003 has 4 divisors (see below), whose sum is σ = 337653792008. Its totient is φ = 168826896000.

The previous prime is 253240343987. The next prime is 253240344011. The reversal of 253240344003 is 300443042352.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 253240344003 - 2⁴ = 253240343987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253240344403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42206723998 + ... + 42206724003.

It is an arithmetic number, because the mean of its divisors is an integer number (84413448002).

Almost surely, 2^253240344003 is an apocalyptic number.

253240344003 is a deficient number, since it is larger than the sum of its proper divisors (84413448005).

253240344003 is an equidigital number, since it uses as much as digits as its factorization.

253240344003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84413448004.

The product of its (nonzero) digits is 34560, while the sum is 30.

Adding to 253240344003 its reverse (300443042352), we get a palindrome (553683386355).

The spelling of 253240344003 in words is "two hundred fifty-three billion, two hundred forty million, three hundred forty-four thousand, three".