11140011531 has 36 divisors (see below), whose sum is σ = 17778919704. Its totient is φ = 6716413440.

The previous prime is 11140011523. The next prime is 11140011551. The reversal of 11140011531 is 13511004111.

11140011531 is a `hidden beast` number, since 111 + 400 + 1 + 153 + 1 = 666.

It is not a de Polignac number, because 11140011531 - 2³ = 11140011523 is a prime.

It is a super-2 number, since 2×11140011531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11140011551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 183676 + ... + 236678.

Almost surely, 2^11140011531 is an apocalyptic number.

11140011531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11140011531 is a deficient number, since it is larger than the sum of its proper divisors (6638908173).

11140011531 is a wasteful number, since it uses less digits than its factorization.

11140011531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53224 (or 53210 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

Adding to 11140011531 its reverse (13511004111), we get a palindrome (24651015642).

The spelling of 11140011531 in words is "eleven billion, one hundred forty million, eleven thousand, five hundred thirty-one".