3115201512123 has 12 divisors (see below), whose sum is σ = 4499793903280. Its totient is φ = 2076774060816.

The previous prime is 3115201512103. The next prime is 3115201512149. The reversal of 3115201512123 is 3212151025113.

3115201512123 is a `hidden beast` number, since 3 + 1 + 1 + 5 + 20 + 1 + 512 + 123 = 666.

It is not a de Polignac number, because 3115201512123 - 2⁵ = 3115201512091 is a prime.

It is a super-2 number, since 2×3115201512123² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3115201512103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1500436 + ... + 2912337.

Almost surely, 2^{3115201512123} is an apocalyptic number.

3115201512123 is a deficient number, since it is larger than the sum of its proper divisors (1384592391157).

3115201512123 is a wasteful number, since it uses less digits than its factorization.

3115201512123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4491218 (or 4491215 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 3115201512123 its reverse (3212151025113), we get a palindrome (6327352537236).

The spelling of 3115201512123 in words is "three trillion, one hundred fifteen billion, two hundred one million, five hundred twelve thousand, one hundred twenty-three".