31052222 has 16 divisors (see below), whose sum is σ = 47780880. Its totient is φ = 15130368.

The previous prime is 31052221. The next prime is 31052227. The reversal of 31052222 is 22225013.

It is a super-2 number, since 2×31052222² = 1928480982274568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31052222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31052221) 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, 11804 + ... + 14192.

It is an arithmetic number, because the mean of its divisors is an integer number (2986305).

Almost surely, 2^31052222 is an apocalyptic number.

31052222 is a deficient number, since it is larger than the sum of its proper divisors (16728658).

31052222 is a wasteful number, since it uses less digits than its factorization.

31052222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 31052222 is about 5572.4520634995. The cubic root of 31052222 is about 314.3143632483.

Adding to 31052222 its reverse (22225013), we get a palindrome (53277235).

The spelling of 31052222 in words is "thirty-one million, fifty-two thousand, two hundred twenty-two".