11401431232 has 84 divisors (see below), whose sum is σ = 24331306176. Its totient is φ = 5298209280.

The previous prime is 11401431169. The next prime is 11401431257. The reversal of 11401431232 is 23213410411.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1219857 + ... + 1229167.

Almost surely, 2^11401431232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11401431232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12165653088).

11401431232 is an abundant number, since it is smaller than the sum of its proper divisors (12929874944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11401431232 is an equidigital number, since it uses as much as digits as its factorization.

11401431232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9414 (or 9385 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 11401431232 its reverse (23213410411), we get a palindrome (34614841643).

The spelling of 11401431232 in words is "eleven billion, four hundred one million, four hundred thirty-one thousand, two hundred thirty-two".