61030312 has 32 divisors (see below), whose sum is σ = 131382720. Its totient is φ = 26035200.

The previous prime is 61030309. The next prime is 61030327. The reversal of 61030312 is 21303016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10312 + ... + 15112.

It is an arithmetic number, because the mean of its divisors is an integer number (4105710).

Almost surely, 2^61030312 is an apocalyptic number.

It is an amenable number.

61030312 is an abundant number, since it is smaller than the sum of its proper divisors (70352408).

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

61030312 is a wasteful number, since it uses less digits than its factorization.

61030312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5041 (or 5037 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 61030312 is about 7812.1899618481. The cubic root of 61030312 is about 393.7149113941.

Adding to 61030312 its reverse (21303016), we get a palindrome (82333328).

The spelling of 61030312 in words is "sixty-one million, thirty thousand, three hundred twelve".