612703231 has 4 divisors (see below), whose sum is σ = 700232272. Its totient is φ = 525174192.

The previous prime is 612703193. The next prime is 612703237. The reversal of 612703231 is 132307216.

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

It is a cyclic number.

It is not a de Polignac number, because 612703231 - 2⁹ = 612702719 is a prime.

It is a super-2 number, since 2×612703231² = 750810498555678722, 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 = 612703196 and 612703205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612703237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43764510 + ... + 43764523.

It is an arithmetic number, because the mean of its divisors is an integer number (175058068).

Almost surely, 2^612703231 is an apocalyptic number.

612703231 is a deficient number, since it is larger than the sum of its proper divisors (87529041).

612703231 is an equidigital number, since it uses as much as digits as its factorization.

612703231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87529040.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 612703231 is about 24752.8428872322. The cubic root of 612703231 is about 849.3435443604.

The spelling of 612703231 in words is "six hundred twelve million, seven hundred three thousand, two hundred thirty-one".