2115291023 has 4 divisors (see below), whose sum is σ = 2116197720. Its totient is φ = 2114384328.

The previous prime is 2115291007. The next prime is 2115291037. The reversal of 2115291023 is 3201925112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2115291023 - 2⁴ = 2115291007 is a prime.

It is a super-2 number, since 2×2115291023² = 8948912223968773058, 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 = 2115290983 and 2115291001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115291053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449840 + ... + 454517.

It is an arithmetic number, because the mean of its divisors is an integer number (529049430).

Almost surely, 2^2115291023 is an apocalyptic number.

2115291023 is a deficient number, since it is larger than the sum of its proper divisors (906697).

2115291023 is an equidigital number, since it uses as much as digits as its factorization.

2115291023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906696.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 2115291023 is about 45992.2930826459. The cubic root of 2115291023 is about 1283.6798046624.

The spelling of 2115291023 in words is "two billion, one hundred fifteen million, two hundred ninety-one thousand, twenty-three".