31998148 has 48 divisors (see below), whose sum is σ = 72987264. Its totient is φ = 11911680.

The previous prime is 31998143. The next prime is 31998151. The reversal of 31998148 is 84189913.

It is not an unprimeable number, because it can be changed into a prime (31998143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3603 + ... + 8773.

It is an arithmetic number, because the mean of its divisors is an integer number (1520568).

Almost surely, 2^31998148 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 31998148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36493632).

31998148 is an abundant number, since it is smaller than the sum of its proper divisors (40989116).

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

31998148 is a wasteful number, since it uses less digits than its factorization.

31998148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5212 (or 5210 counting only the distinct ones).

The product of its digits is 62208, while the sum is 43.

The square root of 31998148 is about 5656.6905519040. The cubic root of 31998148 is about 317.4740855531.

The spelling of 31998148 in words is "thirty-one million, nine hundred ninety-eight thousand, one hundred forty-eight".