61230143 has 8 divisors (see below), whose sum is σ = 67343808. Its totient is φ = 55317024.

The previous prime is 61230133. The next prime is 61230149. The reversal of 61230143 is 34103216.

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 61230143 - 2¹⁸ = 60967999 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61230149) 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, 49496 + ... + 50717.

It is an arithmetic number, because the mean of its divisors is an integer number (8417976).

Almost surely, 2^61230143 is an apocalyptic number.

61230143 is a deficient number, since it is larger than the sum of its proper divisors (6113665).

61230143 is a wasteful number, since it uses less digits than its factorization.

61230143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100273.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 61230143 is about 7824.9692012173. The cubic root of 61230143 is about 394.1441556384.

Adding to 61230143 its reverse (34103216), we get a palindrome (95333359).

The spelling of 61230143 in words is "sixty-one million, two hundred thirty thousand, one hundred forty-three".