231481208 has 16 divisors (see below), whose sum is σ = 496031280. Its totient is φ = 99206208.

The previous prime is 231481171. The next prime is 231481241. The reversal of 231481208 is 802184132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2066741 + ... + 2066852.

It is an arithmetic number, because the mean of its divisors is an integer number (31001955).

Almost surely, 2^231481208 is an apocalyptic number.

231481208 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

231481208 is an abundant number, since it is smaller than the sum of its proper divisors (264550072).

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

231481208 is a wasteful number, since it uses less digits than its factorization.

231481208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4133606 (or 4133602 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 231481208 is about 15214.5064987334. The cubic root of 231481208 is about 614.0050079698.

The spelling of 231481208 in words is "two hundred thirty-one million, four hundred eighty-one thousand, two hundred eight".