31422644 has 12 divisors (see below), whose sum is σ = 59988768. Its totient is φ = 14283000.

The previous prime is 31422641. The next prime is 31422659. The reversal of 31422644 is 44622413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31422641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357032 + ... + 357119.

It is an arithmetic number, because the mean of its divisors is an integer number (4999064).

Almost surely, 2^31422644 is an apocalyptic number.

It is an amenable number.

31422644 is a deficient number, since it is larger than the sum of its proper divisors (28566124).

31422644 is a wasteful number, since it uses less digits than its factorization.

31422644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714166 (or 714164 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 31422644 is about 5605.5904238537. The cubic root of 31422644 is about 315.5592450545.

The spelling of 31422644 in words is "thirty-one million, four hundred twenty-two thousand, six hundred forty-four".