10223981 has 4 divisors (see below), whose sum is σ = 10461792. Its totient is φ = 9986172.

The previous prime is 10223971. The next prime is 10223989. The reversal of 10223981 is 18932201.

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 10223981 - 2¹⁰ = 10222957 is a prime.

It is a super-2 number, since 2×10223981² = 209059574976722, 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 10223981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10223989) 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, 118841 + ... + 118926.

It is an arithmetic number, because the mean of its divisors is an integer number (2615448).

Almost surely, 2^10223981 is an apocalyptic number.

It is an amenable number.

10223981 is a deficient number, since it is larger than the sum of its proper divisors (237811).

10223981 is an equidigital number, since it uses as much as digits as its factorization.

10223981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237810.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 10223981 is about 3197.4960516004. The cubic root of 10223981 is about 217.0401151885.

The spelling of 10223981 in words is "ten million, two hundred twenty-three thousand, nine hundred eighty-one".