31221034 has 8 divisors (see below), whose sum is σ = 50434020. Its totient is φ = 14409696.

The previous prime is 31221017. The next prime is 31221041. The reversal of 31221034 is 43012213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25532809 + 5688225 = 5053^2 + 2385^2 .

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 = 31220999 and 31221017.

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, 600379 + ... + 600430.

Almost surely, 2^31221034 is an apocalyptic number.

31221034 is a deficient number, since it is larger than the sum of its proper divisors (19212986).

31221034 is a wasteful number, since it uses less digits than its factorization.

31221034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200824.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31221034 is about 5587.5785453092. The cubic root of 31221034 is about 314.8829127276.

Adding to 31221034 its reverse (43012213), we get a palindrome (74233247).

The spelling of 31221034 in words is "thirty-one million, two hundred twenty-one thousand, thirty-four".