1120131231 has 16 divisors (see below), whose sum is σ = 1520297856. Its totient is φ = 733464416.

The previous prime is 1120131223. The next prime is 1120131247. The reversal of 1120131231 is 1321310211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1120131231 - 2³ = 1120131223 is a prime.

It is a super-2 number, since 2×1120131231² = 2509387949323150722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1120131231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120131251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30076 + ... + 56078.

It is an arithmetic number, because the mean of its divisors is an integer number (95018616).

Almost surely, 2^1120131231 is an apocalyptic number.

1120131231 is a deficient number, since it is larger than the sum of its proper divisors (400166625).

1120131231 is a wasteful number, since it uses less digits than its factorization.

1120131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26262.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1120131231 is about 33468.3616420045. The cubic root of 1120131231 is about 1038.5393792739.

Adding to 1120131231 its reverse (1321310211), we get a palindrome (2441441442).

The spelling of 1120131231 in words is "one billion, one hundred twenty million, one hundred thirty-one thousand, two hundred thirty-one".