331471890 has 24 divisors (see below), whose sum is σ = 861827148. Its totient is φ = 88392480.

The previous prime is 331471879. The next prime is 331471897. The reversal of 331471890 is 98174133.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 325405521 + 6066369 = 18039^2 + 2463^2 .

It is a super-2 number, since 2×331471890² = 219747227720344200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (331471897) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1841421 + ... + 1841600.

Almost surely, 2^331471890 is an apocalyptic number.

331471890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

331471890 is an abundant number, since it is smaller than the sum of its proper divisors (530355258).

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

331471890 is a wasteful number, since it uses less digits than its factorization.

331471890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3683034 (or 3683031 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 331471890 is about 18206.3694898242. The cubic root of 331471890 is about 692.0682116707.

The spelling of 331471890 in words is "three hundred thirty-one million, four hundred seventy-one thousand, eight hundred ninety".