1130111231 has 8 divisors (see below), whose sum is σ = 1179676800. Its totient is φ = 1081365120.

The previous prime is 1130111197. The next prime is 1130111243. The reversal of 1130111231 is 1321110311.

It is a happy number.

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 1130111231 - 2³⁰ = 56369407 is a prime.

It is a super-2 number, since 2×1130111231² = 2554302788864670722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130111131) 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, 202046 + ... + 207563.

It is an arithmetic number, because the mean of its divisors is an integer number (147459600).

Almost surely, 2^1130111231 is an apocalyptic number.

1130111231 is a deficient number, since it is larger than the sum of its proper divisors (49565569).

1130111231 is an equidigital number, since it uses as much as digits as its factorization.

1130111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409729.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1130111231 is about 33617.1270485745. The cubic root of 1130111231 is about 1041.6146120064.

Adding to 1130111231 its reverse (1321110311), we get a palindrome (2451221542).

The spelling of 1130111231 in words is "one billion, one hundred thirty million, one hundred eleven thousand, two hundred thirty-one".