231402847 has 8 divisors (see below), whose sum is σ = 255938816. Its totient is φ = 207829152.

The previous prime is 231402833. The next prime is 231402851. The reversal of 231402847 is 748204132.

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 231402847 - 2⁷ = 231402719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231402877) 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, 240063 + ... + 241024.

It is an arithmetic number, because the mean of its divisors is an integer number (31992352).

Almost surely, 2^231402847 is an apocalyptic number.

231402847 is a deficient number, since it is larger than the sum of its proper divisors (24535969).

231402847 is a wasteful number, since it uses less digits than its factorization.

231402847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481137.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 231402847 is about 15211.9310739958. The cubic root of 231402847 is about 613.9357158416.

Adding to 231402847 its reverse (748204132), we get a palindrome (979606979).

The spelling of 231402847 in words is "two hundred thirty-one million, four hundred two thousand, eight hundred forty-seven".