31942944 has 96 divisors (see below), whose sum is σ = 101666880. Its totient is φ = 9676800.

The previous prime is 31942921. The next prime is 31942969. The reversal of 31942944 is 44924913.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 31942899 and 31942908.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7824 + ... + 11184.

It is an arithmetic number, because the mean of its divisors is an integer number (1059030).

Almost surely, 2^31942944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31942944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50833440).

31942944 is an abundant number, since it is smaller than the sum of its proper divisors (69723936).

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

31942944 is a wasteful number, since it uses less digits than its factorization.

31942944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391 (or 3377 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 31942944 is about 5651.8089139673. The cubic root of 31942944 is about 317.2914090665.

The spelling of 31942944 in words is "thirty-one million, nine hundred forty-two thousand, nine hundred forty-four".