61813303 has 2 divisors, whose sum is σ = 61813304. Its totient is φ = 61813302.

The previous prime is 61813291. The next prime is 61813321. The reversal of 61813303 is 30331816.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61813303 - 2¹³ = 61805111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61813333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30906651 + 30906652.

It is an arithmetic number, because the mean of its divisors is an integer number (30906652).

Almost surely, 2^61813303 is an apocalyptic number.

61813303 is a deficient number, since it is larger than the sum of its proper divisors (1).

61813303 is an equidigital number, since it uses as much as digits as its factorization.

61813303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 61813303 is about 7862.1436644213. The cubic root of 61813303 is about 395.3914892322.

The spelling of 61813303 in words is "sixty-one million, eight hundred thirteen thousand, three hundred three".