2151345213 has 6 divisors (see below), whose sum is σ = 3107498654. Its totient is φ = 1434230136.

The previous prime is 2151345199. The next prime is 2151345233. The reversal of 2151345213 is 3125431512.

2151345213 is a `hidden beast` number, since 2 + 1 + 5 + 134 + 521 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1350342009 + 801003204 = 36747^2 + 28302^2 .

It is not a de Polignac number, because 2151345213 - 2⁴ = 2151345197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151345233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119519170 + ... + 119519187.

Almost surely, 2^2151345213 is an apocalyptic number.

It is an amenable number.

2151345213 is a deficient number, since it is larger than the sum of its proper divisors (956153441).

2151345213 is a wasteful number, since it uses less digits than its factorization.

2151345213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239038363 (or 239038360 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2151345213 is about 46382.5960140223. The cubic root of 2151345213 is about 1290.9320054036.

Adding to 2151345213 its reverse (3125431512), we get a palindrome (5276776725).

The spelling of 2151345213 in words is "two billion, one hundred fifty-one million, three hundred forty-five thousand, two hundred thirteen".