2115051331 has 4 divisors (see below), whose sum is σ = 2121112000. Its totient is φ = 2108990664.

The previous prime is 2115051317. The next prime is 2115051343. The reversal of 2115051331 is 1331505112.

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 2115051331 - 2²⁹ = 1578180419 is a prime.

It is a super-2 number, since 2×2115051331² = 8946884265529743122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115051031) 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, 3029811 + ... + 3030508.

It is an arithmetic number, because the mean of its divisors is an integer number (530278000).

Almost surely, 2^2115051331 is an apocalyptic number.

2115051331 is a deficient number, since it is larger than the sum of its proper divisors (6060669).

2115051331 is an equidigital number, since it uses as much as digits as its factorization.

2115051331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060668.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 2115051331 is about 45989.6872244202. The cubic root of 2115051331 is about 1283.6313165507.

Adding to 2115051331 its reverse (1331505112), we get a palindrome (3446556443).

The spelling of 2115051331 in words is "two billion, one hundred fifteen million, fifty-one thousand, three hundred thirty-one".