11431115312 has 20 divisors (see below), whose sum is σ = 23313459480. Its totient is φ = 5414738688.

The previous prime is 11431115279. The next prime is 11431115329. The reversal of 11431115312 is 21351113411.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18800873 + ... + 18801480.

It is an arithmetic number, because the mean of its divisors is an integer number (1165672974).

Almost surely, 2^11431115312 is an apocalyptic number.

It is an amenable number.

11431115312 is an abundant number, since it is smaller than the sum of its proper divisors (11882344168).

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

11431115312 is a wasteful number, since it uses less digits than its factorization.

11431115312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37602380 (or 37602374 counting only the distinct ones).

The product of its digits is 360, while the sum is 23.

Adding to 11431115312 its reverse (21351113411), we get a palindrome (32782228723).

The spelling of 11431115312 in words is "eleven billion, four hundred thirty-one million, one hundred fifteen thousand, three hundred twelve".