31422230 has 32 divisors (see below), whose sum is σ = 65966400. Its totient is φ = 10772160.

The previous prime is 31422229. The next prime is 31422233. The reversal of 31422230 is 3222413.

It is a junction number, because it is equal to n+sod(n) for n = 31422199 and 31422208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31422233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1151 + ... + 8010.

It is an arithmetic number, because the mean of its divisors is an integer number (2061450).

Almost surely, 2^31422230 is an apocalyptic number.

31422230 is an abundant number, since it is smaller than the sum of its proper divisors (34544170).

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

31422230 is an equidigital number, since it uses as much as digits as its factorization.

31422230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9189 (or 9175 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 31422230 is about 5605.5534963106. The cubic root of 31422230 is about 315.5578591951.

Adding to 31422230 its reverse (3222413), we get a palindrome (34644643).

The spelling of 31422230 in words is "thirty-one million, four hundred twenty-two thousand, two hundred thirty".