3123109899 has 64 divisors (see below), whose sum is σ = 6029614080. Its totient is φ = 1550430720.

The previous prime is 3123109889. The next prime is 3123110027. The reversal of 3123109899 is 9989013213.

It is a happy number.

It is not a de Polignac number, because 3123109899 - 2⁷ = 3123109771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3123109859) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4384 + ... + 79154.

It is an arithmetic number, because the mean of its divisors is an integer number (94212720).

Almost surely, 2^3123109899 is an apocalyptic number.

3123109899 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

3123109899 is a deficient number, since it is larger than the sum of its proper divisors (2906504181).

3123109899 is a wasteful number, since it uses less digits than its factorization.

3123109899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74817 (or 74811 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 3123109899 is about 55884.7913031802. The cubic root of 3123109899 is about 1461.7140529216.

The spelling of 3123109899 in words is "three billion, one hundred twenty-three million, one hundred nine thousand, eight hundred ninety-nine".