11253218431 has 16 divisors (see below), whose sum is σ = 14132776000. Its totient is φ = 8903641824.

The previous prime is 11253218401. The next prime is 11253218539. The reversal of 11253218431 is 13481235211.

It is not a de Polignac number, because 11253218431 - 2⁹ = 11253217919 is a prime.

It is a super-2 number, since 2×11253218431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11253218393 and 11253218402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11253218401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1257396 + ... + 1266313.

It is an arithmetic number, because the mean of its divisors is an integer number (883298500).

Almost surely, 2^11253218431 is an apocalyptic number.

11253218431 is a deficient number, since it is larger than the sum of its proper divisors (2879557569).

11253218431 is an equidigital number, since it uses as much as digits as its factorization.

11253218431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523743 (or 2523729 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The spelling of 11253218431 in words is "eleven billion, two hundred fifty-three million, two hundred eighteen thousand, four hundred thirty-one".