22031031 has 32 divisors (see below), whose sum is σ = 34276608. Its totient is φ = 12439040.

The previous prime is 22031027. The next prime is 22031057. The reversal of 22031031 is 13013022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22031031 - 2² = 22031027 is a prime.

It is a super-2 number, since 2×22031031² = 970732653845922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22030998 and 22031016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96940 + ... + 97166.

It is an arithmetic number, because the mean of its divisors is an integer number (1071144).

Almost surely, 2^22031031 is an apocalyptic number.

22031031 is a deficient number, since it is larger than the sum of its proper divisors (12245577).

22031031 is a wasteful number, since it uses less digits than its factorization.

22031031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 22031031 is about 4693.7225099062. The cubic root of 22031031 is about 280.3356137223.

Adding to 22031031 its reverse (13013022), we get a palindrome (35044053).

Subtracting from 22031031 its reverse (13013022), we obtain a square (9018009 = 3003²).

The spelling of 22031031 in words is "twenty-two million, thirty-one thousand, thirty-one".