61030143 has 6 divisors (see below), whose sum is σ = 88154664. Its totient is φ = 40686756.

The previous prime is 61030133. The next prime is 61030157. The reversal of 61030143 is 34103016.

It is not a de Polignac number, because 61030143 - 2⁴ = 61030127 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61030133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3390555 + ... + 3390572.

It is an arithmetic number, because the mean of its divisors is an integer number (14692444).

Almost surely, 2^61030143 is an apocalyptic number.

61030143 is a deficient number, since it is larger than the sum of its proper divisors (27124521).

61030143 is a wasteful number, since it uses less digits than its factorization.

61030143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781133 (or 6781130 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 61030143 is about 7812.1791454113. The cubic root of 61030143 is about 393.7145479797.

Adding to 61030143 its reverse (34103016), we get a palindrome (95133159).

The spelling of 61030143 in words is "sixty-one million, thirty thousand, one hundred forty-three".