123311109 has 8 divisors (see below), whose sum is σ = 164826432. Its totient is φ = 82001600.

The previous prime is 123311107. The next prime is 123311117. The reversal of 123311109 is 901113321.

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 123311109 - 2¹ = 123311107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311107) 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, 50049 + ... + 52454.

It is an arithmetic number, because the mean of its divisors is an integer number (20603304).

Almost surely, 2^123311109 is an apocalyptic number.

It is an amenable number.

123311109 is a deficient number, since it is larger than the sum of its proper divisors (41515323).

123311109 is a wasteful number, since it uses less digits than its factorization.

123311109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102907.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 123311109 is about 11104.5535254687. The cubic root of 123311109 is about 497.7379268165.

The spelling of 123311109 in words is "one hundred twenty-three million, three hundred eleven thousand, one hundred nine".