231553423 has 2 divisors, whose sum is σ = 231553424. Its totient is φ = 231553422.

The previous prime is 231553411. The next prime is 231553459. The reversal of 231553423 is 324355132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231553423 - 2⁵ = 231553391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231553391 and 231553400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231553463) 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, 115776711 + 115776712.

It is an arithmetic number, because the mean of its divisors is an integer number (115776712).

Almost surely, 2^231553423 is an apocalyptic number.

231553423 is a deficient number, since it is larger than the sum of its proper divisors (1).

231553423 is an equidigital number, since it uses as much as digits as its factorization.

231553423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 28.

The square root of 231553423 is about 15216.8795421400. The cubic root of 231553423 is about 614.0688515418.

The spelling of 231553423 in words is "two hundred thirty-one million, five hundred fifty-three thousand, four hundred twenty-three".