1131120123 has 8 divisors (see below), whose sum is σ = 1723611648. Its totient is φ = 646354344.

The previous prime is 1131120119. The next prime is 1131120127. The reversal of 1131120123 is 3210211311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1131120119) and next prime (1131120127).

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

It is not a de Polignac number, because 1131120123 - 2² = 1131120119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131120127) 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, 26931411 + ... + 26931452.

It is an arithmetic number, because the mean of its divisors is an integer number (215451456).

Almost surely, 2^1131120123 is an apocalyptic number.

1131120123 is a deficient number, since it is larger than the sum of its proper divisors (592491525).

1131120123 is an equidigital number, since it uses as much as digits as its factorization.

1131120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53862873.

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

The square root of 1131120123 is about 33632.1293259883. The cubic root of 1131120123 is about 1041.9244824146.

Adding to 1131120123 its reverse (3210211311), we get a palindrome (4341331434).

The spelling of 1131120123 in words is "one billion, one hundred thirty-one million, one hundred twenty thousand, one hundred twenty-three".