22031207 has 8 divisors (see below), whose sum is σ = 24068352. Its totient is φ = 19999800.

The previous prime is 22031197. The next prime is 22031209. The reversal of 22031207 is 70213022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22031207 - 2¹⁴ = 22014823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12728 + ... + 14354.

It is an arithmetic number, because the mean of its divisors is an integer number (3008544).

Almost surely, 2^22031207 is an apocalyptic number.

22031207 is a deficient number, since it is larger than the sum of its proper divisors (2037145).

22031207 is a wasteful number, since it uses less digits than its factorization.

22031207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 22031207 is about 4693.7412583141. The cubic root of 22031207 is about 280.3363602290.

Adding to 22031207 its reverse (70213022), we get a palindrome (92244229).

The spelling of 22031207 in words is "twenty-two million, thirty-one thousand, two hundred seven".