61230312 has 192 divisors, whose sum is σ = 205732800. Its totient is φ = 16174080.

The previous prime is 61230287. The next prime is 61230313. The reversal of 61230312 is 21303216.

61230312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61230312² = 7498302215234688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (61230313) 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 47 ways as a sum of consecutive naturals, for example, 195468 + ... + 195780.

It is an arithmetic number, because the mean of its divisors is an integer number (1071525).

Almost surely, 2^61230312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61230312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102866400).

61230312 is an abundant number, since it is smaller than the sum of its proper divisors (144502488).

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

61230312 is a wasteful number, since it uses less digits than its factorization.

61230312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 61230312 is about 7824.9799999744. The cubic root of 61230312 is about 394.1445182610.

Adding to 61230312 its reverse (21303216), we get a palindrome (82533528).

The spelling of 61230312 in words is "sixty-one million, two hundred thirty thousand, three hundred twelve".