22031142 has 32 divisors (see below), whose sum is σ = 51984384. Its totient is φ = 6091200.

The previous prime is 22031137. The next prime is 22031159. The reversal of 22031142 is 24113022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7159 + ... + 9762.

It is an arithmetic number, because the mean of its divisors is an integer number (1624512).

Almost surely, 2^22031142 is an apocalyptic number.

22031142 is an abundant number, since it is smaller than the sum of its proper divisors (29953242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22031142 is a wasteful number, since it uses less digits than its factorization.

22031142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16964.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 22031142 is about 4693.7343341949. The cubic root of 22031142 is about 280.3360845309.

Adding to 22031142 its reverse (24113022), we get a palindrome (46144164).

The spelling of 22031142 in words is "twenty-two million, thirty-one thousand, one hundred forty-two".