61312303 has 8 divisors (see below), whose sum is σ = 67015088. Its totient is φ = 55750464.

The previous prime is 61312271. The next prime is 61312309. The reversal of 61312303 is 30321316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61312303 - 2⁵ = 61312271 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 (61312309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34326 + ... + 36067.

It is an arithmetic number, because the mean of its divisors is an integer number (8376886).

Almost surely, 2^61312303 is an apocalyptic number.

61312303 is a deficient number, since it is larger than the sum of its proper divisors (5702785).

61312303 is a wasteful number, since it uses less digits than its factorization.

61312303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70473.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 61312303 is about 7830.2173022209. The cubic root of 61312303 is about 394.3203673809.

Adding to 61312303 its reverse (30321316), we get a palindrome (91633619).

The spelling of 61312303 in words is "sixty-one million, three hundred twelve thousand, three hundred three".