1115512131 has 8 divisors (see below), whose sum is σ = 1495947600. Its totient is φ = 739375712.

The previous prime is 1115512127. The next prime is 1115512141. The reversal of 1115512131 is 1312155111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1115512131 - 2² = 1115512127 is a prime.

It is a super-2 number, since 2×1115512131² = 2488734628816322322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1115512098 and 1115512107.

It is not an unprimeable number, because it can be changed into a prime (1115512141) 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, 1074156 + ... + 1075193.

It is an arithmetic number, because the mean of its divisors is an integer number (186993450).

Almost surely, 2^1115512131 is an apocalyptic number.

1115512131 is a deficient number, since it is larger than the sum of its proper divisors (380435469).

1115512131 is a wasteful number, since it uses less digits than its factorization.

1115512131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149525.

The product of its digits is 150, while the sum is 21.

The square root of 1115512131 is about 33399.2833905160. The cubic root of 1115512131 is about 1037.1098663023.

Adding to 1115512131 its reverse (1312155111), we get a palindrome (2427667242).

The spelling of 1115512131 in words is "one billion, one hundred fifteen million, five hundred twelve thousand, one hundred thirty-one".