223234476781 has 4 divisors (see below), whose sum is σ = 223236573472. Its totient is φ = 223232380092.

The previous prime is 223234476767. The next prime is 223234476797. The reversal of 223234476781 is 187674432322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 223234476781 - 2¹⁷ = 223234345709 is a prime.

It is a super-3 number, since 3×223234476781³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223234476281) 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, 879585 + ... + 1104598.

It is an arithmetic number, because the mean of its divisors is an integer number (55809143368).

Almost surely, 2^223234476781 is an apocalyptic number.

It is an amenable number.

223234476781 is a deficient number, since it is larger than the sum of its proper divisors (2096691).

223234476781 is a wasteful number, since it uses less digits than its factorization.

223234476781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096690.

The product of its digits is 2709504, while the sum is 49.

The spelling of 223234476781 in words is "two hundred twenty-three billion, two hundred thirty-four million, four hundred seventy-six thousand, seven hundred eighty-one".