31068444 has 36 divisors (see below), whose sum is σ = 79686152. Its totient is φ = 9414240.

The previous prime is 31068371. The next prime is 31068451. The reversal of 31068444 is 44486013.

It is a super-2 number, since 2×31068444² = 1930496425162272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9247 + ... + 12150.

Almost surely, 2^31068444 is an apocalyptic number.

It is an amenable number.

31068444 is an abundant number, since it is smaller than the sum of its proper divisors (48617708).

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

31068444 is a wasteful number, since it uses less digits than its factorization.

31068444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21426 (or 21413 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 31068444 is about 5573.9074265725. The cubic root of 31068444 is about 314.3690874048.

Subtracting 31068444 from its reverse (44486013), we obtain a square (13417569 = 3663²).

The spelling of 31068444 in words is "thirty-one million, sixty-eight thousand, four hundred forty-four".