2352215681 has 4 divisors (see below), whose sum is σ = 2454485952. Its totient is φ = 2249945412.

The previous prime is 2352215651. The next prime is 2352215743. The reversal of 2352215681 is 1865122532.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2352215681 - 2⁶ = 2352215617 is a prime.

It is a super-2 number, since 2×2352215681² = 11065837219884587522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2352215611) 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, 51135101 + ... + 51135146.

It is an arithmetic number, because the mean of its divisors is an integer number (613621488).

Almost surely, 2^2352215681 is an apocalyptic number.

It is an amenable number.

2352215681 is a deficient number, since it is larger than the sum of its proper divisors (102270271).

2352215681 is a wasteful number, since it uses less digits than its factorization.

2352215681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102270270.

The product of its digits is 28800, while the sum is 35.

The square root of 2352215681 is about 48499.6461945858. The cubic root of 2352215681 is about 1329.9206014749.

The spelling of 2352215681 in words is "two billion, three hundred fifty-two million, two hundred fifteen thousand, six hundred eighty-one".