2152133231 has 4 divisors (see below), whose sum is σ = 2210299032. Its totient is φ = 2093967432.

The previous prime is 2152133227. The next prime is 2152133233. The reversal of 2152133231 is 1323312512.

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 2152133231 - 2² = 2152133227 is a prime.

It is a super-2 number, since 2×2152133231² = 9263354887948998722, 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 = 2152133197 and 2152133206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152133233) 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, 29082845 + ... + 29082918.

It is an arithmetic number, because the mean of its divisors is an integer number (552574758).

Almost surely, 2^2152133231 is an apocalyptic number.

2152133231 is a deficient number, since it is larger than the sum of its proper divisors (58165801).

2152133231 is an equidigital number, since it uses as much as digits as its factorization.

2152133231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58165800.

The product of its digits is 1080, while the sum is 23.

The square root of 2152133231 is about 46391.0899958171. The cubic root of 2152133231 is about 1291.0896050099.

Adding to 2152133231 its reverse (1323312512), we get a palindrome (3475445743).

The spelling of 2152133231 in words is "two billion, one hundred fifty-two million, one hundred thirty-three thousand, two hundred thirty-one".