61811303 has 16 divisors (see below), whose sum is σ = 68864256. Its totient is φ = 55211520.

The previous prime is 61811297. The next prime is 61811317. The reversal of 61811303 is 30311816.

It is a cyclic number.

It is not a de Polignac number, because 61811303 - 2⁴ = 61811287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61811333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26825 + ... + 29037.

It is an arithmetic number, because the mean of its divisors is an integer number (4304016).

Almost surely, 2^61811303 is an apocalyptic number.

61811303 is a deficient number, since it is larger than the sum of its proper divisors (7052953).

61811303 is a wasteful number, since it uses less digits than its factorization.

61811303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 61811303 is about 7862.0164716185. The cubic root of 61811303 is about 395.3872248238.

The spelling of 61811303 in words is "sixty-one million, eight hundred eleven thousand, three hundred three".