31442422 has 8 divisors (see below), whose sum is σ = 51451272. Its totient is φ = 14292000.

The previous prime is 31442419. The next prime is 31442431. The reversal of 31442422 is 22424413.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 1429201 = 31442422 / (3 + 1 + 4 + 4 + 2 + 4 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 31442393 and 31442402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714579 + ... + 714622.

It is an arithmetic number, because the mean of its divisors is an integer number (6431409).

Almost surely, 2^31442422 is an apocalyptic number.

31442422 is a deficient number, since it is larger than the sum of its proper divisors (20008850).

31442422 is a wasteful number, since it uses less digits than its factorization.

31442422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429214.

The product of its digits is 1536, while the sum is 22.

The square root of 31442422 is about 5607.3542780887. The cubic root of 31442422 is about 315.6254374663.

Adding to 31442422 its reverse (22424413), we get a palindrome (53866835).

Subtracting from 31442422 its reverse (22424413), we obtain a square (9018009 = 3003²).

The spelling of 31442422 in words is "thirty-one million, four hundred forty-two thousand, four hundred twenty-two".