1131011123 has 8 divisors (see below), whose sum is σ = 1234206720. Its totient is φ = 1027878280.

The previous prime is 1131011113. The next prime is 1131011129. The reversal of 1131011123 is 3211101311.

It is a happy number.

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

It is not a de Polignac number, because 1131011123 - 2⁶ = 1131011059 is a prime.

It is a super-2 number, since 2×1131011123² = 2558372320699442258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131011098 and 1131011107.

It is not an unprimeable number, because it can be changed into a prime (1131011129) 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, 27086 + ... + 54732.

It is an arithmetic number, because the mean of its divisors is an integer number (154275840).

Almost surely, 2^1131011123 is an apocalyptic number.

1131011123 is a deficient number, since it is larger than the sum of its proper divisors (103195597).

1131011123 is a wasteful number, since it uses less digits than its factorization.

1131011123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31377.

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

The square root of 1131011123 is about 33630.5088126838. The cubic root of 1131011123 is about 1041.8910131085.

Adding to 1131011123 its reverse (3211101311), we get a palindrome (4342112434).

The spelling of 1131011123 in words is "one billion, one hundred thirty-one million, eleven thousand, one hundred twenty-three".