231849487 has 2 divisors, whose sum is σ = 231849488. Its totient is φ = 231849486.

The previous prime is 231849481. The next prime is 231849503. The reversal of 231849487 is 784948132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231849487 - 2³ = 231849479 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231849481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115924743 + 115924744.

It is an arithmetic number, because the mean of its divisors is an integer number (115924744).

Almost surely, 2^231849487 is an apocalyptic number.

231849487 is a deficient number, since it is larger than the sum of its proper divisors (1).

231849487 is an equidigital number, since it uses as much as digits as its factorization.

231849487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 46.

The square root of 231849487 is about 15226.6045788285. The cubic root of 231849487 is about 614.3304560396.

The spelling of 231849487 in words is "two hundred thirty-one million, eight hundred forty-nine thousand, four hundred eighty-seven".