61730313 has 4 divisors (see below), whose sum is σ = 82307088. Its totient is φ = 41153540.

The previous prime is 61730309. The next prime is 61730323. The reversal of 61730313 is 31303716.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61730313 - 2² = 61730309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61730303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10288383 + ... + 10288388.

It is an arithmetic number, because the mean of its divisors is an integer number (20576772).

Almost surely, 2^61730313 is an apocalyptic number.

It is an amenable number.

61730313 is a deficient number, since it is larger than the sum of its proper divisors (20576775).

61730313 is a wasteful number, since it uses less digits than its factorization.

61730313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20576774.

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 61730313 is about 7856.8640690800. The cubic root of 61730313 is about 395.2144602642.

The spelling of 61730313 in words is "sixty-one million, seven hundred thirty thousand, three hundred thirteen".