31948644 has 96 divisors (see below), whose sum is σ = 97203456. Its totient is φ = 7925760.

The previous prime is 31948639. The next prime is 31948667. The reversal of 31948644 is 44684913.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17704 + ... + 19424.

It is an arithmetic number, because the mean of its divisors is an integer number (1012536).

Almost surely, 2^31948644 is an apocalyptic number.

31948644 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31948644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48601728).

31948644 is an abundant number, since it is smaller than the sum of its proper divisors (65254812).

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

31948644 is a wasteful number, since it uses less digits than its factorization.

31948644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765 (or 1763 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 31948644 is about 5652.3131548066. The cubic root of 31948644 is about 317.3102807717.

The spelling of 31948644 in words is "thirty-one million, nine hundred forty-eight thousand, six hundred forty-four".