11203400253 has 8 divisors (see below), whose sum is σ = 14941614688. Its totient is φ = 7467059664.

The previous prime is 11203400251. The next prime is 11203400261. The reversal of 11203400253 is 35200430211.

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

It is not a de Polignac number, because 11203400253 - 2¹ = 11203400251 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 (11203400251) 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, 454450 + ... + 478467.

It is an arithmetic number, because the mean of its divisors is an integer number (1867701836).

Almost surely, 2^11203400253 is an apocalyptic number.

It is an amenable number.

11203400253 is a deficient number, since it is larger than the sum of its proper divisors (3738214435).

11203400253 is an equidigital number, since it uses as much as digits as its factorization.

11203400253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936923.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 11203400253 its reverse (35200430211), we get a palindrome (46403830464).

The spelling of 11203400253 in words is "eleven billion, two hundred three million, four hundred thousand, two hundred fifty-three".