31144022 has 32 divisors (see below), whose sum is σ = 57840384. Its totient is φ = 12247200.

The previous prime is 31143971. The next prime is 31144027. The reversal of 31144022 is 22044113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37997 + ... + 38807.

It is an arithmetic number, because the mean of its divisors is an integer number (1807512).

Almost surely, 2^31144022 is an apocalyptic number.

31144022 is a deficient number, since it is larger than the sum of its proper divisors (26696362).

31144022 is a wasteful number, since it uses less digits than its factorization.

31144022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 31144022 is about 5580.6829331185. The cubic root of 31144022 is about 314.6237954397.

Adding to 31144022 its reverse (22044113), we get a palindrome (53188135).

Subtracting from 31144022 its reverse (22044113), we obtain a palindrome (9099909).

The spelling of 31144022 in words is "thirty-one million, one hundred forty-four thousand, twenty-two".