1120123231 has 4 divisors (see below), whose sum is σ = 1158748200. Its totient is φ = 1081498264.

The previous prime is 1120123189. The next prime is 1120123241. The reversal of 1120123231 is 1323210211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1323210211 = 14503 ⋅91237.

It is a cyclic number.

It is not a de Polignac number, because 1120123231 - 2²³ = 1111734623 is a prime.

It is a super-2 number, since 2×1120123231² = 2509352105251758722, 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 (1120123241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19312441 + ... + 19312498.

It is an arithmetic number, because the mean of its divisors is an integer number (289687050).

Almost surely, 2^1120123231 is an apocalyptic number.

1120123231 is a deficient number, since it is larger than the sum of its proper divisors (38624969).

1120123231 is an equidigital number, since it uses as much as digits as its factorization.

1120123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38624968.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1120123231 is about 33468.2421259319. The cubic root of 1120123231 is about 1038.5369068449.

Adding to 1120123231 its reverse (1323210211), we get a palindrome (2443333442).

The spelling of 1120123231 in words is "one billion, one hundred twenty million, one hundred twenty-three thousand, two hundred thirty-one".