61303139 has 16 divisors (see below), whose sum is σ = 69634080. Its totient is φ = 53614080.

The previous prime is 61303133. The next prime is 61303141. The reversal of 61303139 is 93130316.

It is a cyclic number.

It is not a de Polignac number, because 61303139 - 2⁸ = 61302883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61303133) 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, 15329 + ... + 18909.

It is an arithmetic number, because the mean of its divisors is an integer number (4352130).

Almost surely, 2^61303139 is an apocalyptic number.

61303139 is a deficient number, since it is larger than the sum of its proper divisors (8330941).

61303139 is a wasteful number, since it uses less digits than its factorization.

61303139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 61303139 is about 7829.6321114086. The cubic root of 61303139 is about 394.3007207972.

The spelling of 61303139 in words is "sixty-one million, three hundred three thousand, one hundred thirty-nine".