31142022 has 16 divisors (see below), whose sum is σ = 62340672. Its totient is φ = 10371240.

The previous prime is 31142021. The next prime is 31142039. The reversal of 31142022 is 22024113.

It is a junction number, because it is equal to n+sod(n) for n = 31141992 and 31142010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31142021) 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, 8997 + ... + 11967.

It is an arithmetic number, because the mean of its divisors is an integer number (3896292).

Almost surely, 2^31142022 is an apocalyptic number.

31142022 is an abundant number, since it is smaller than the sum of its proper divisors (31198650).

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

31142022 is a wasteful number, since it uses less digits than its factorization.

31142022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723.

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

The square root of 31142022 is about 5580.5037407030. The cubic root of 31142022 is about 314.6170604815.

Adding to 31142022 its reverse (22024113), we get a palindrome (53166135).

The spelling of 31142022 in words is "thirty-one million, one hundred forty-two thousand, twenty-two".