31040022 has 32 divisors (see below), whose sum is σ = 68285952. Its totient is φ = 9346464.

The previous prime is 31040017. The next prime is 31040029. The reversal of 31040022 is 22004013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31040029) 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, 568 + ... + 7899.

It is an arithmetic number, because the mean of its divisors is an integer number (2133936).

Almost surely, 2^31040022 is an apocalyptic number.

31040022 is an abundant number, since it is smaller than the sum of its proper divisors (37245930).

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

31040022 is a wasteful number, since it uses less digits than its factorization.

31040022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8532.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 31040022 is about 5571.3572852582. The cubic root of 31040022 is about 314.2731945623.

Adding to 31040022 its reverse (22004013), we get a palindrome (53044035).

The spelling of 31040022 in words is "thirty-one million, forty thousand, twenty-two".