231322637847 has 64 divisors (see below), whose sum is σ = 385689959424. Its totient is φ = 120311654400.

The previous prime is 231322637789. The next prime is 231322637873. The reversal of 231322637847 is 748736223132.

It is not a de Polignac number, because 231322637847 - 2⁶ = 231322637783 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231322637796 and 231322637805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231322637947) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1475853 + ... + 1625049.

It is an arithmetic number, because the mean of its divisors is an integer number (6026405616).

Almost surely, 2^231322637847 is an apocalyptic number.

231322637847 is a deficient number, since it is larger than the sum of its proper divisors (154367321577).

231322637847 is a wasteful number, since it uses less digits than its factorization.

231322637847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149368.

The product of its digits is 2032128, while the sum is 48.

The spelling of 231322637847 in words is "two hundred thirty-one billion, three hundred twenty-two million, six hundred thirty-seven thousand, eight hundred forty-seven".