22213031 has 4 divisors (see below), whose sum is σ = 22433064. Its totient is φ = 21993000.

The previous prime is 22213007. The next prime is 22213049. The reversal of 22213031 is 13031222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22213031 is a prime.

It is a super-2 number, since 2×22213031² = 986837492413922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22212997 and 22213015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22213091) 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, 109865 + ... + 110066.

It is an arithmetic number, because the mean of its divisors is an integer number (5608266).

Almost surely, 2^22213031 is an apocalyptic number.

22213031 is a deficient number, since it is larger than the sum of its proper divisors (220033).

22213031 is a wasteful number, since it uses less digits than its factorization.

22213031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220032.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 22213031 is about 4713.0702307519. The cubic root of 22213031 is about 281.1054555368.

Adding to 22213031 its reverse (13031222), we get a palindrome (35244253).

The spelling of 22213031 in words is "twenty-two million, two hundred thirteen thousand, thirty-one".