231237047 has 2 divisors, whose sum is σ = 231237048. Its totient is φ = 231237046.

The previous prime is 231237023. The next prime is 231237067. The reversal of 231237047 is 740732132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231237047 - 2¹⁴ = 231220663 is a prime.

It is equal to p_12706913 and since 231237047 and 12706913 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231237067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115618523 + 115618524.

It is an arithmetic number, because the mean of its divisors is an integer number (115618524).

Almost surely, 2^231237047 is an apocalyptic number.

231237047 is a deficient number, since it is larger than the sum of its proper divisors (1).

231237047 is an equidigital number, since it uses as much as digits as its factorization.

231237047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 231237047 is about 15206.4804277650. The cubic root of 231237047 is about 613.7890526182.

Adding to 231237047 its reverse (740732132), we get a palindrome (971969179).

The spelling of 231237047 in words is "two hundred thirty-one million, two hundred thirty-seven thousand, forty-seven".