231730387047 has 6 divisors (see below), whose sum is σ = 334721670192. Its totient is φ = 154486924692.

The previous prime is 231730387043. The next prime is 231730387069. The reversal of 231730387047 is 740783037132.

231730387047 is a `hidden beast` number, since 231 + 7 + 30 + 387 + 0 + 4 + 7 = 666.

It is not a de Polignac number, because 231730387047 - 2² = 231730387043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231730386993 and 231730387011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231730387043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12873910383 + ... + 12873910400.

It is an arithmetic number, because the mean of its divisors is an integer number (55786945032).

Almost surely, 2^231730387047 is an apocalyptic number.

231730387047 is a deficient number, since it is larger than the sum of its proper divisors (102991283145).

231730387047 is a wasteful number, since it uses less digits than its factorization.

231730387047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25747820789 (or 25747820786 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 45.

The spelling of 231730387047 in words is "two hundred thirty-one billion, seven hundred thirty million, three hundred eighty-seven thousand, forty-seven".