11431200253 has 4 divisors (see below), whose sum is σ = 12470400288. Its totient is φ = 10392000220.

The previous prime is 11431200241. The next prime is 11431200271. The reversal of 11431200253 is 35200213411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35200213411 = 11 ⋅3200019401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11431200253 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431200293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519600001 + ... + 519600022.

It is an arithmetic number, because the mean of its divisors is an integer number (3117600072).

Almost surely, 2^11431200253 is an apocalyptic number.

It is an amenable number.

11431200253 is a deficient number, since it is larger than the sum of its proper divisors (1039200035).

11431200253 is a wasteful number, since it uses less digits than its factorization.

11431200253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039200034.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 11431200253 its reverse (35200213411), we get a palindrome (46631413664).

The spelling of 11431200253 in words is "eleven billion, four hundred thirty-one million, two hundred thousand, two hundred fifty-three".