1131113123 has 8 divisors (see below), whose sum is σ = 1293550848. Its totient is φ = 968887944.

The previous prime is 1131113107. The next prime is 1131113197. The reversal of 1131113123 is 3213111311.

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 1131113123 - 2⁴ = 1131113107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131113623) 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, 41561 + ... + 63162.

It is an arithmetic number, because the mean of its divisors is an integer number (161693856).

Almost surely, 2^1131113123 is an apocalyptic number.

1131113123 is a deficient number, since it is larger than the sum of its proper divisors (162437725).

1131113123 is a wasteful number, since it uses less digits than its factorization.

1131113123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106273.

The product of its digits is 54, while the sum is 17.

The square root of 1131113123 is about 33632.0252586727. The cubic root of 1131113123 is about 1041.9223330742.

Adding to 1131113123 its reverse (3213111311), we get a palindrome (4344224434).

The spelling of 1131113123 in words is "one billion, one hundred thirty-one million, one hundred thirteen thousand, one hundred twenty-three".