31441424 has 60 divisors (see below), whose sum is σ = 71787072. Its totient is φ = 13067520.

The previous prime is 31441411. The next prime is 31441433. The reversal of 31441424 is 42414413.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31441424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188189 + ... + 188355.

Almost surely, 2^31441424 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 31441424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35893536).

31441424 is an abundant number, since it is smaller than the sum of its proper divisors (40345648).

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

31441424 is a wasteful number, since it uses less digits than its factorization.

31441424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 217 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 31441424 is about 5607.2652871074. The cubic root of 31441424 is about 315.6220980552.

Adding to 31441424 its reverse (42414413), we get a palindrome (73855837).

The spelling of 31441424 in words is "thirty-one million, four hundred forty-one thousand, four hundred twenty-four".