612311012 has 6 divisors (see below), whose sum is σ = 1071544278. Its totient is φ = 306155504.

The previous prime is 612310999. The next prime is 612311033. The reversal of 612311012 is 210113216.

It can be written as a sum of positive squares in only one way, i.e., 478121956 + 134189056 = 21866^2 + 11584^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76538873 + ... + 76538880.

It is an arithmetic number, because the mean of its divisors is an integer number (178590713).

Almost surely, 2^612311012 is an apocalyptic number.

It is an amenable number.

612311012 is a deficient number, since it is larger than the sum of its proper divisors (459233266).

612311012 is a wasteful number, since it uses less digits than its factorization.

612311012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153077757 (or 153077755 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 612311012 is about 24744.9189127788. The cubic root of 612311012 is about 849.1622712918.

Adding to 612311012 its reverse (210113216), we get a palindrome (822424228).

The spelling of 612311012 in words is "six hundred twelve million, three hundred eleven thousand, twelve".