31948344 has 80 divisors (see below), whose sum is σ = 91476000. Its totient is φ = 10412928.

The previous prime is 31948339. The next prime is 31948351. The reversal of 31948344 is 44384913.

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 = 31948299 and 31948308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29932 + ... + 30980.

It is an arithmetic number, because the mean of its divisors is an integer number (1143450).

It is a vampire number, since it can be written as 3384 ⋅ 9441 (with its own digits).

Almost surely, 2^31948344 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 31948344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45738000).

31948344 is an abundant number, since it is smaller than the sum of its proper divisors (59527656).

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

31948344 is a wasteful number, since it uses less digits than its factorization.

31948344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114 (or 1101 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 31948344 is about 5652.2866169365. The cubic root of 31948344 is about 317.3092875800.

The spelling of 31948344 in words is "thirty-one million, nine hundred forty-eight thousand, three hundred forty-four".