2153230231 has 4 divisors (see below), whose sum is σ = 2153842200. Its totient is φ = 2152618264.

The previous prime is 2153230171. The next prime is 2153230259. The reversal of 2153230231 is 1320323512.

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 2153230231 - 2¹⁷ = 2153099159 is a prime.

It is a super-2 number, since 2×2153230231² = 9272800855384626722, 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 (2153230531) 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, 300676 + ... + 307753.

It is an arithmetic number, because the mean of its divisors is an integer number (538460550).

Almost surely, 2^2153230231 is an apocalyptic number.

2153230231 is a deficient number, since it is larger than the sum of its proper divisors (611969).

2153230231 is an equidigital number, since it uses as much as digits as its factorization.

2153230231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611968.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 2153230231 is about 46402.9118806137. The cubic root of 2153230231 is about 1291.3089354086.

Adding to 2153230231 its reverse (1320323512), we get a palindrome (3473553743).

The spelling of 2153230231 in words is "two billion, one hundred fifty-three million, two hundred thirty thousand, two hundred thirty-one".