31020422 has 8 divisors (see below), whose sum is σ = 48553776. Its totient is φ = 14835832.

The previous prime is 31020373. The next prime is 31020449. The reversal of 31020422 is 22402013.

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 = 31020397 and 31020406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337133 + ... + 337224.

It is an arithmetic number, because the mean of its divisors is an integer number (6069222).

Almost surely, 2^31020422 is an apocalyptic number.

31020422 is a deficient number, since it is larger than the sum of its proper divisors (17533354).

31020422 is a wasteful number, since it uses less digits than its factorization.

31020422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674382.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 31020422 is about 5569.5980106288. The cubic root of 31020422 is about 314.2070321137.

Adding to 31020422 its reverse (22402013), we get a palindrome (53422435).

The spelling of 31020422 in words is "thirty-one million, twenty thousand, four hundred twenty-two".