2265172831 has 4 divisors (see below), whose sum is σ = 2268324000. Its totient is φ = 2262021664.

The previous prime is 2265172823. The next prime is 2265172859. The reversal of 2265172831 is 1382715622.

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 2265172831 - 2³ = 2265172823 is a prime.

It is a super-2 number, since 2×2265172831² = 10262015908601109122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2265172631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1574506 + ... + 1575943.

It is an arithmetic number, because the mean of its divisors is an integer number (567081000).

Almost surely, 2^2265172831 is an apocalyptic number.

2265172831 is a deficient number, since it is larger than the sum of its proper divisors (3151169).

2265172831 is an equidigital number, since it uses as much as digits as its factorization.

2265172831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151168.

The product of its digits is 40320, while the sum is 37.

The square root of 2265172831 is about 47593.8318587609. The cubic root of 2265172831 is about 1313.3095872450.

The spelling of 2265172831 in words is "two billion, two hundred sixty-five million, one hundred seventy-two thousand, eight hundred thirty-one".