11131535240 has 32 divisors (see below), whose sum is σ = 28623948480. Its totient is φ = 3816526272.

The previous prime is 11131535231. The next prime is 11131535249. The reversal of 11131535240 is 4253513111.

It is an interprime number because it is at equal distance from previous prime (11131535231) and next prime (11131535249).

It is a super-2 number, since 2×11131535240² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11131535249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19877462 + ... + 19878021.

It is an arithmetic number, because the mean of its divisors is an integer number (894498390).

Almost surely, 2^11131535240 is an apocalyptic number.

11131535240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11131535240 is an abundant number, since it is smaller than the sum of its proper divisors (17492413240).

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

11131535240 is a wasteful number, since it uses less digits than its factorization.

11131535240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39755501 (or 39755497 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 11131535240 in words is "eleven billion, one hundred thirty-one million, five hundred thirty-five thousand, two hundred forty".