1112540831 has 4 divisors (see below), whose sum is σ = 1112607672. Its totient is φ = 1112473992.

The previous prime is 1112540813. The next prime is 1112540837. The reversal of 1112540831 is 1380452111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1380452111 = 23 ⋅60019657.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112540831 is a prime.

It is a super-2 number, since 2×1112540831² = 2475494201284341122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1112540831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112540837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13580 + ... + 49086.

It is an arithmetic number, because the mean of its divisors is an integer number (278151918).

Almost surely, 2^1112540831 is an apocalyptic number.

1112540831 is a deficient number, since it is larger than the sum of its proper divisors (66841).

1112540831 is an equidigital number, since it uses as much as digits as its factorization.

1112540831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66840.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 1112540831 is about 33354.7722372676. The cubic root of 1112540831 is about 1036.1882254540.

Adding to 1112540831 its reverse (1380452111), we get a palindrome (2492992942).

The spelling of 1112540831 in words is "one billion, one hundred twelve million, five hundred forty thousand, eight hundred thirty-one".