2115723117 has 8 divisors (see below), whose sum is σ = 2986903296. Its totient is φ = 1327512512.

The previous prime is 2115723073. The next prime is 2115723161. The reversal of 2115723117 is 7113275112.

It is an interprime number because it is at equal distance from previous prime (2115723073) and next prime (2115723161).

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 2115723117 - 2⁷ = 2115722989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115723917) 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, 20742333 + ... + 20742434.

It is an arithmetic number, because the mean of its divisors is an integer number (373362912).

Almost surely, 2^2115723117 is an apocalyptic number.

It is an amenable number.

2115723117 is a deficient number, since it is larger than the sum of its proper divisors (871180179).

2115723117 is a wasteful number, since it uses less digits than its factorization.

2115723117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41484787.

The product of its digits is 2940, while the sum is 30.

The square root of 2115723117 is about 45996.9903037144. The cubic root of 2115723117 is about 1283.7672051779.

Adding to 2115723117 its reverse (7113275112), we get a palindrome (9228998229).

The spelling of 2115723117 in words is "two billion, one hundred fifteen million, seven hundred twenty-three thousand, one hundred seventeen".