1123010109 has 16 divisors (see below), whose sum is σ = 1791697600. Its totient is φ = 691082928.

The previous prime is 1123010101. The next prime is 1123010111. The reversal of 1123010109 is 9010103211.

It is not a de Polignac number, because 1123010109 - 2³ = 1123010101 is a prime.

It is a super-2 number, since 2×1123010109² = 2522303409832383762, 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 = 1123010091 and 1123010100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123010101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1599379 + ... + 1600080.

It is an arithmetic number, because the mean of its divisors is an integer number (111981100).

Almost surely, 2^1123010109 is an apocalyptic number.

It is an amenable number.

1123010109 is a deficient number, since it is larger than the sum of its proper divisors (668687491).

1123010109 is a wasteful number, since it uses less digits than its factorization.

1123010109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199481 (or 3199475 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 1123010109 is about 33511.3429900981. The cubic root of 1123010109 is about 1039.4283436881.

The spelling of 1123010109 in words is "one billion, one hundred twenty-three million, ten thousand, one hundred nine".