31422345 has 16 divisors (see below), whose sum is σ = 50612352. Its totient is φ = 16646400.

The previous prime is 31422343. The next prime is 31422353. The reversal of 31422345 is 54322413.

It is not a de Polignac number, because 31422345 - 2¹ = 31422343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31422343) 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, 4672 + ... + 9201.

It is an arithmetic number, because the mean of its divisors is an integer number (3163272).

Almost surely, 2^31422345 is an apocalyptic number.

It is an amenable number.

31422345 is a deficient number, since it is larger than the sum of its proper divisors (19190007).

31422345 is a wasteful number, since it uses less digits than its factorization.

31422345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14032.

The product of its digits is 2880, while the sum is 24.

The square root of 31422345 is about 5605.5637539859. The cubic root of 31422345 is about 315.5582441572.

Adding to 31422345 its reverse (54322413), we get a palindrome (85744758).

The spelling of 31422345 in words is "thirty-one million, four hundred twenty-two thousand, three hundred forty-five".