31438946 has 48 divisors (see below), whose sum is σ = 60341568. Its totient is φ = 12022560.

The previous prime is 31438909. The next prime is 31438963. The reversal of 31438946 is 64983413.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113360 + ... + 113636.

It is an arithmetic number, because the mean of its divisors is an integer number (1257116).

Almost surely, 2^31438946 is an apocalyptic number.

31438946 is a deficient number, since it is larger than the sum of its proper divisors (28902622).

31438946 is a wasteful number, since it uses less digits than its factorization.

31438946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 364 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 31438946 is about 5607.0443194253. The cubic root of 31438946 is about 315.6138061056.

The spelling of 31438946 in words is "thirty-one million, four hundred thirty-eight thousand, nine hundred forty-six".