231154223 has 2 divisors, whose sum is σ = 231154224. Its totient is φ = 231154222.

The previous prime is 231154211. The next prime is 231154241. The reversal of 231154223 is 322451132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231154223 - 2¹⁶ = 231088687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231154243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115577111 + 115577112.

It is an arithmetic number, because the mean of its divisors is an integer number (115577112).

Almost surely, 2^231154223 is an apocalyptic number.

231154223 is a deficient number, since it is larger than the sum of its proper divisors (1).

231154223 is an equidigital number, since it uses as much as digits as its factorization.

231154223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 23.

The square root of 231154223 is about 15203.7568712473. The cubic root of 231154223 is about 613.7157619758.

The spelling of 231154223 in words is "two hundred thirty-one million, one hundred fifty-four thousand, two hundred twenty-three".