31348644 has 24 divisors (see below), whose sum is σ = 73418688. Its totient is φ = 10410720.

The previous prime is 31348643. The next prime is 31348687. The reversal of 31348644 is 44684313.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31348643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1392 + ... + 8039.

It is an arithmetic number, because the mean of its divisors is an integer number (3059112).

Almost surely, 2^31348644 is an apocalyptic number.

It is an amenable number.

31348644 is an abundant number, since it is smaller than the sum of its proper divisors (42070044).

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

31348644 is a wasteful number, since it uses less digits than its factorization.

31348644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9715 (or 9713 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

The square root of 31348644 is about 5598.9859796217. The cubic root of 31348644 is about 315.3113374319.

The spelling of 31348644 in words is "thirty-one million, three hundred forty-eight thousand, six hundred forty-four".