61830231 has 8 divisors (see below), whose sum is σ = 82554240. Its totient is φ = 41163192.

The previous prime is 61830227. The next prime is 61830253. The reversal of 61830231 is 13203816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61830231 - 2² = 61830227 is a prime.

It is a super-2 number, since 2×61830231² = 7645954931026722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61830631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11641 + ... + 16098.

It is an arithmetic number, because the mean of its divisors is an integer number (10319280).

Almost surely, 2^61830231 is an apocalyptic number.

61830231 is a deficient number, since it is larger than the sum of its proper divisors (20724009).

61830231 is a wasteful number, since it uses less digits than its factorization.

61830231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28485.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 61830231 is about 7863.2201419012. The cubic root of 61830231 is about 395.4275795014.

The spelling of 61830231 in words is "sixty-one million, eight hundred thirty thousand, two hundred thirty-one".