243051023 has 16 divisors (see below), whose sum is σ = 262795680. Its totient is φ = 224726400.

The previous prime is 243051019. The next prime is 243051043. The reversal of 243051023 is 320150342.

It is a happy number.

It is not a de Polignac number, because 243051023 - 2² = 243051019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243050986 and 243051004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243051043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299288 + ... + 300098.

It is an arithmetic number, because the mean of its divisors is an integer number (16424730).

Almost surely, 2^243051023 is an apocalyptic number.

243051023 is a deficient number, since it is larger than the sum of its proper divisors (19744657).

243051023 is an frugal number, since it uses more digits than its factorization.

243051023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 243051023 is about 15590.0937457092. The cubic root of 243051023 is about 624.0688196273.

The spelling of 243051023 in words is "two hundred forty-three million, fifty-one thousand, twenty-three".