2151012313 has 4 divisors (see below), whose sum is σ = 2176928208. Its totient is φ = 2125096420.

The previous prime is 2151012307. The next prime is 2151012337. The reversal of 2151012313 is 3132101512.

2151012313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2151012313 - 2⁹ = 2151011801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151012613) 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, 12957823 + ... + 12957988.

It is an arithmetic number, because the mean of its divisors is an integer number (544232052).

Almost surely, 2^2151012313 is an apocalyptic number.

It is an amenable number.

2151012313 is a deficient number, since it is larger than the sum of its proper divisors (25915895).

2151012313 is an equidigital number, since it uses as much as digits as its factorization.

2151012313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25915894.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 2151012313 is about 46379.0072446576. The cubic root of 2151012313 is about 1290.8654155276.

Adding to 2151012313 its reverse (3132101512), we get a palindrome (5283113825).

The spelling of 2151012313 in words is "two billion, one hundred fifty-one million, twelve thousand, three hundred thirteen".