223424731 has 4 divisors (see below), whose sum is σ = 223455672. Its totient is φ = 223393792.

The previous prime is 223424711. The next prime is 223424741. The reversal of 223424731 is 137424322.

223424731 = T₁₂₂₀₃ + T₁₂₂₀₄ + T₁₂₂₀₅.

223424731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 223424731 - 2¹⁹ = 222900443 is a prime.

It is a super-2 number, since 2×223424731² = 99837220844844722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223424731.

It is not an unprimeable number, because it can be changed into a prime (223424701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1755 + ... + 21211.

It is an arithmetic number, because the mean of its divisors is an integer number (55863918).

Almost surely, 2^223424731 is an apocalyptic number.

223424731 is the 12205-th centered triangular number.

223424731 is a deficient number, since it is larger than the sum of its proper divisors (30941).

223424731 is a wasteful number, since it uses less digits than its factorization.

223424731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30940.

The product of its digits is 8064, while the sum is 28.

The square root of 223424731 is about 14947.3988038053. The cubic root of 223424731 is about 606.7974512076.

The spelling of 223424731 in words is "two hundred twenty-three million, four hundred twenty-four thousand, seven hundred thirty-one".