612042313 has 4 divisors (see below), whose sum is σ = 648044820. Its totient is φ = 576039808.

The previous prime is 612042311. The next prime is 612042317. The reversal of 612042313 is 313240216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 278322489 + 333719824 = 16683^2 + 18268^2 .

It is a cyclic number.

It is not a de Polignac number, because 612042313 - 2¹ = 612042311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612042311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18001228 + ... + 18001261.

It is an arithmetic number, because the mean of its divisors is an integer number (162011205).

Almost surely, 2^612042313 is an apocalyptic number.

It is an amenable number.

612042313 is a deficient number, since it is larger than the sum of its proper divisors (36002507).

612042313 is a wasteful number, since it uses less digits than its factorization.

612042313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36002506.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 612042313 is about 24739.4889397497. The cubic root of 612042313 is about 849.0380411580.

Adding to 612042313 its reverse (313240216), we get a palindrome (925282529).

The spelling of 612042313 in words is "six hundred twelve million, forty-two thousand, three hundred thirteen".