1125231135 has 32 divisors (see below), whose sum is σ = 2058908160. Its totient is φ = 514055808.

The previous prime is 1125231097. The next prime is 1125231143. The reversal of 1125231135 is 5311325211.

It is not a de Polignac number, because 1125231135 - 2⁷ = 1125231007 is a prime.

It is a super-2 number, since 2×1125231135² = 2532290214346776450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235884 + ... + 240606.

It is an arithmetic number, because the mean of its divisors is an integer number (64340880).

Almost surely, 2^1125231135 is an apocalyptic number.

1125231135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1125231135 is a deficient number, since it is larger than the sum of its proper divisors (933677025).

1125231135 is a wasteful number, since it uses less digits than its factorization.

1125231135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7007.

The product of its digits is 900, while the sum is 24.

The square root of 1125231135 is about 33544.4650426863. The cubic root of 1125231135 is about 1040.1131333411.

Adding to 1125231135 its reverse (5311325211), we get a palindrome (6436556346).

The spelling of 1125231135 in words is "one billion, one hundred twenty-five million, two hundred thirty-one thousand, one hundred thirty-five".