1131123102 has 48 divisors (see below), whose sum is σ = 2376832512. Its totient is φ = 358488720.

The previous prime is 1131123089. The next prime is 1131123121. The reversal of 1131123102 is 2013211311.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 646593 + ... + 648339.

It is an arithmetic number, because the mean of its divisors is an integer number (49517344).

Almost surely, 2^1131123102 is an apocalyptic number.

1131123102 is an abundant number, since it is smaller than the sum of its proper divisors (1245709410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131123102 is a wasteful number, since it uses less digits than its factorization.

1131123102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901 (or 1842 counting only the distinct ones).

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

The square root of 1131123102 is about 33632.1736139667. The cubic root of 1131123102 is about 1041.9253971097.

Adding to 1131123102 its reverse (2013211311), we get a palindrome (3144334413).

The spelling of 1131123102 in words is "one billion, one hundred thirty-one million, one hundred twenty-three thousand, one hundred two".