31143022 has 8 divisors (see below), whose sum is σ = 46787400. Its totient is φ = 15547224.

The previous prime is 31143019. The next prime is 31143029. The reversal of 31143022 is 22034113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31142987 and 31143005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10497 + ... + 13132.

It is an arithmetic number, because the mean of its divisors is an integer number (5848425).

Almost surely, 2^31143022 is an apocalyptic number.

31143022 is a deficient number, since it is larger than the sum of its proper divisors (15644378).

31143022 is a wasteful number, since it uses less digits than its factorization.

31143022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24290.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31143022 is about 5580.5933376300. The cubic root of 31143022 is about 314.6204279966.

Adding to 31143022 its reverse (22034113), we get a palindrome (53177135).

The spelling of 31143022 in words is "thirty-one million, one hundred forty-three thousand, twenty-two".