731923 has 2 divisors, whose sum is σ = 731924. Its totient is φ = 731922.

The previous prime is 731921. The next prime is 731933. The reversal of 731923 is 329137.

731923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 731923 - 2¹ = 731921 is a prime.

It is a super-2 number, since 2×731923² = 1071422555858, which contains 22 as substring.

Together with 731921, it forms a pair of twin primes.

It is equal to p₅₈₉₃₀ and since 731923 and 58930 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (731921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365961 + 365962.

It is an arithmetic number, because the mean of its divisors is an integer number (365962).

2⁷³¹⁹²³ is an apocalyptic number.

731923 is a deficient number, since it is larger than the sum of its proper divisors (1).

731923 is an equidigital number, since it uses as much as digits as its factorization.

731923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 25.

The square root of 731923 is about 855.5249850238. The cubic root of 731923 is about 90.1201276539.

The spelling of 731923 in words is "seven hundred thirty-one thousand, nine hundred twenty-three".