11403131240 has 64 divisors (see below), whose sum is σ = 25929072000. Its totient is φ = 4513001728.

The previous prime is 11403131237. The next prime is 11403131297. The reversal of 11403131240 is 4213130411.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5849786 + ... + 5851734.

It is an arithmetic number, because the mean of its divisors is an integer number (405141750).

Almost surely, 2^11403131240 is an apocalyptic number.

11403131240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11403131240 is an abundant number, since it is smaller than the sum of its proper divisors (14525940760).

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

11403131240 is a wasteful number, since it uses less digits than its factorization.

11403131240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3434 (or 3430 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11403131240 its reverse (4213130411), we get a palindrome (15616261651).

The spelling of 11403131240 in words is "eleven billion, four hundred three million, one hundred thirty-one thousand, two hundred forty".