612232306340 has 12 divisors (see below), whose sum is σ = 1285687843356. Its totient is φ = 244892922528.

The previous prime is 612232306337. The next prime is 612232306349. The reversal of 612232306340 is 43603232216.

It can be written as a sum of positive squares in 2 ways, for example, as 383329386496 + 228902919844 = 619136^2 + 478438^2 .

It is a junction number, because it is equal to n+sod(n) for n = 612232306297 and 612232306306.

It is not an unprimeable number, because it can be changed into a prime (612232306349) 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, 15305807639 + ... + 15305807678.

It is an arithmetic number, because the mean of its divisors is an integer number (107140653613).

Almost surely, 2^612232306340 is an apocalyptic number.

It is an amenable number.

612232306340 is an abundant number, since it is smaller than the sum of its proper divisors (673455537016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612232306340 is a wasteful number, since it uses less digits than its factorization.

612232306340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30611615326 (or 30611615324 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 612232306340 its reverse (43603232216), we get a palindrome (655835538556).

The spelling of 612232306340 in words is "six hundred twelve billion, two hundred thirty-two million, three hundred six thousand, three hundred forty".