2133021231 has 24 divisors (see below), whose sum is σ = 3362907600. Its totient is φ = 1292054400.

The previous prime is 2133021223. The next prime is 2133021239. The reversal of 2133021231 is 1321203312.

It is an interprime number because it is at equal distance from previous prime (2133021223) and next prime (2133021239).

It is not a de Polignac number, because 2133021231 - 2³ = 2133021223 is a prime.

It is a super-2 number, since 2×2133021231² = 9099559143793510722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133021239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231195 + ... + 240243.

It is an arithmetic number, because the mean of its divisors is an integer number (140121150).

Almost surely, 2^2133021231 is an apocalyptic number.

2133021231 is a deficient number, since it is larger than the sum of its proper divisors (1229886369).

2133021231 is a wasteful number, since it uses less digits than its factorization.

2133021231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11447 (or 11444 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2133021231 is about 46184.6428047246. The cubic root of 2133021231 is about 1287.2563990188.

Adding to 2133021231 its reverse (1321203312), we get a palindrome (3454224543).

The spelling of 2133021231 in words is "two billion, one hundred thirty-three million, twenty-one thousand, two hundred thirty-one".