61631303 has 2 divisors, whose sum is σ = 61631304. Its totient is φ = 61631302.

The previous prime is 61631299. The next prime is 61631327. The reversal of 61631303 is 30313616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61631303 - 2² = 61631299 is a prime.

It is a Chen prime.

It is equal to p_3653051 and since 61631303 and 3653051 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61631333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30815651 + 30815652.

It is an arithmetic number, because the mean of its divisors is an integer number (30815652).

Almost surely, 2^61631303 is an apocalyptic number.

61631303 is a deficient number, since it is larger than the sum of its proper divisors (1).

61631303 is an equidigital number, since it uses as much as digits as its factorization.

61631303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 61631303 is about 7850.5606806138. The cubic root of 61631303 is about 395.0030507696.

Adding to 61631303 its reverse (30313616), we get a palindrome (91944919).

The spelling of 61631303 in words is "sixty-one million, six hundred thirty-one thousand, three hundred three".