231823873 has 2 divisors, whose sum is σ = 231823874. Its totient is φ = 231823872.

The previous prime is 231823871. The next prime is 231823909. The reversal of 231823873 is 378328132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136702864 + 95121009 = 11692^2 + 9753^2 .

It is a cyclic number.

It is not a de Polignac number, because 231823873 - 2¹ = 231823871 is a prime.

Together with 231823871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (231823871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115911936 + 115911937.

It is an arithmetic number, because the mean of its divisors is an integer number (115911937).

Almost surely, 2^231823873 is an apocalyptic number.

It is an amenable number.

231823873 is a deficient number, since it is larger than the sum of its proper divisors (1).

231823873 is an equidigital number, since it uses as much as digits as its factorization.

231823873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 231823873 is about 15225.7634619746. The cubic root of 231823873 is about 614.3078321094.

The spelling of 231823873 in words is "two hundred thirty-one million, eight hundred twenty-three thousand, eight hundred seventy-three".