223312031 has 4 divisors (see below), whose sum is σ = 223436352. Its totient is φ = 223187712.

The previous prime is 223312021. The next prime is 223312079. The reversal of 223312031 is 130213322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130213322 = 2 ⋅65106661.

It is a cyclic number.

It is not a de Polignac number, because 223312031 - 2⁶ = 223311967 is a prime.

It is a super-2 number, since 2×223312031² = 99736526378689922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223312021) 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, 59426 + ... + 63071.

It is an arithmetic number, because the mean of its divisors is an integer number (55859088).

Almost surely, 2^223312031 is an apocalyptic number.

223312031 is a deficient number, since it is larger than the sum of its proper divisors (124321).

223312031 is a wasteful number, since it uses less digits than its factorization.

223312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124320.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 223312031 is about 14943.6284415800. The cubic root of 223312031 is about 606.6954070365.

Adding to 223312031 its reverse (130213322), we get a palindrome (353525353).

The spelling of 223312031 in words is "two hundred twenty-three million, three hundred twelve thousand, thirty-one".