61400312 has 16 divisors (see below), whose sum is σ = 115209000. Its totient is φ = 30677920.

The previous prime is 61400291. The next prime is 61400327. The reversal of 61400312 is 21300416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18887 + ... + 21897.

Almost surely, 2^61400312 is an apocalyptic number.

It is an amenable number.

61400312 is a deficient number, since it is larger than the sum of its proper divisors (53808688).

61400312 is a wasteful number, since it uses less digits than its factorization.

61400312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5566 (or 5562 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 61400312 is about 7835.8351182245. The cubic root of 61400312 is about 394.5089491604.

Adding to 61400312 its reverse (21300416), we get a palindrome (82700728).

The spelling of 61400312 in words is "sixty-one million, four hundred thousand, three hundred twelve".