31424896 has 32 divisors (see below), whose sum is σ = 63274680. Its totient is φ = 15544320.

The previous prime is 31424881. The next prime is 31424947. The reversal of 31424896 is 69842413.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×31424896² = 1975048177221632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11151 + ... + 13681.

Almost surely, 2^31424896 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 31424896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31637340).

31424896 is an abundant number, since it is smaller than the sum of its proper divisors (31849784).

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

31424896 is an equidigital number, since it uses as much as digits as its factorization.

31424896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642 (or 2630 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 31424896 is about 5605.7912911560. The cubic root of 31424896 is about 315.5667833809.

The spelling of 31424896 in words is "thirty-one million, four hundred twenty-four thousand, eight hundred ninety-six".