2145312333 has 6 divisors (see below), whose sum is σ = 3098784494. Its totient is φ = 1430208216.

The previous prime is 2145312307. The next prime is 2145312341. The reversal of 2145312333 is 3332135412.

2145312333 is a `hidden beast` number, since 2 + 14 + 5 + 312 + 333 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1899042084 + 246270249 = 43578^2 + 15693^2 .

It is not a de Polignac number, because 2145312333 - 2¹² = 2145308237 is a prime.

It is a super-2 number, since 2×2145312333² = 9204730012243805778, 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 = 2145312297 and 2145312306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145312343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119184010 + ... + 119184027.

Almost surely, 2^2145312333 is an apocalyptic number.

It is an amenable number.

2145312333 is a deficient number, since it is larger than the sum of its proper divisors (953472161).

2145312333 is a wasteful number, since it uses less digits than its factorization.

2145312333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238368043 (or 238368040 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 2145312333 is about 46317.5164813486. The cubic root of 2145312333 is about 1289.7241829639.

Adding to 2145312333 its reverse (3332135412), we get a palindrome (5477447745).

The spelling of 2145312333 in words is "two billion, one hundred forty-five million, three hundred twelve thousand, three hundred thirty-three".