5661739231 has 8 divisors (see below), whose sum is σ = 5718456144. Its totient is φ = 5605138560.

The previous prime is 5661739207. The next prime is 5661739261. The reversal of 5661739231 is 1329371665.

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 5661739231 - 2⁵ = 5661739199 is a prime.

It is a super-2 number, since 2×5661739231² = 64110582239688942722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661739201) 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 7 ways as a sum of consecutive naturals, for example, 70536 + ... + 127666.

It is an arithmetic number, because the mean of its divisors is an integer number (714807018).

Almost surely, 2^5661739231 is an apocalyptic number.

5661739231 is a deficient number, since it is larger than the sum of its proper divisors (56716913).

5661739231 is a wasteful number, since it uses less digits than its factorization.

5661739231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58121.

The product of its digits is 204120, while the sum is 43.

The square root of 5661739231 is about 75244.5295752455. The cubic root of 5661739231 is about 1782.3101796348.

The spelling of 5661739231 in words is "five billion, six hundred sixty-one million, seven hundred thirty-nine thousand, two hundred thirty-one".