61303212 has 18 divisors (see below), whose sum is σ = 154960988. Its totient is φ = 20434392.

The previous prime is 61303141. The next prime is 61303237. The reversal of 61303212 is 21230316.

It is a tau number, because it is divible by the number of its divisors (18).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 851398 + ... + 851469.

Almost surely, 2^61303212 is an apocalyptic number.

It is an amenable number.

61303212 is an abundant number, since it is smaller than the sum of its proper divisors (93657776).

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

61303212 is a wasteful number, since it uses less digits than its factorization.

61303212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702877 (or 1702872 counting only the distinct ones).

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

The square root of 61303212 is about 7829.6367731843. The cubic root of 61303212 is about 394.3008773087.

Adding to 61303212 its reverse (21230316), we get a palindrome (82533528).

The spelling of 61303212 in words is "sixty-one million, three hundred three thousand, two hundred twelve".