31868148 has 48 divisors (see below), whose sum is σ = 81300800. Its totient is φ = 9656064.

The previous prime is 31868101. The next prime is 31868171. The reversal of 31868148 is 84186813.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8928 + ... + 11976.

Almost surely, 2^31868148 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 31868148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40650400).

31868148 is an abundant number, since it is smaller than the sum of its proper divisors (49432652).

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

31868148 is a wasteful number, since it uses less digits than its factorization.

31868148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3136 (or 3134 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 31868148 is about 5645.1880393836. The cubic root of 31868148 is about 317.0435642875.

The spelling of 31868148 in words is "thirty-one million, eight hundred sixty-eight thousand, one hundred forty-eight".