2321312133 has 24 divisors (see below), whose sum is σ = 3635381568. Its totient is φ = 1313577216.

The previous prime is 2321312101. The next prime is 2321312167. The reversal of 2321312133 is 3312131232.

It is not a de Polignac number, because 2321312133 - 2⁵ = 2321312101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321312173) 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, 61516 + ... + 91797.

It is an arithmetic number, because the mean of its divisors is an integer number (151474232).

Almost surely, 2^2321312133 is an apocalyptic number.

It is an amenable number.

2321312133 is a deficient number, since it is larger than the sum of its proper divisors (1314069435).

2321312133 is a wasteful number, since it uses less digits than its factorization.

2321312133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153433 (or 153426 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 2321312133 is about 48179.9972291406. The cubic root of 2321312133 is about 1324.0707157688.

Adding to 2321312133 its reverse (3312131232), we get a palindrome (5633443365).

The spelling of 2321312133 in words is "two billion, three hundred twenty-one million, three hundred twelve thousand, one hundred thirty-three".