385481331 has 12 divisors (see below), whose sum is σ = 557011000. Its totient is φ = 256893120.

The previous prime is 385481321. The next prime is 385481353. The reversal of 385481331 is 133184583.

It is not a de Polignac number, because 385481331 - 2⁶ = 385481267 is a prime.

It is a super-2 number, since 2×385481331² = 297191713099063122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385481321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25371 + ... + 37611.

Almost surely, 2^385481331 is an apocalyptic number.

385481331 is a deficient number, since it is larger than the sum of its proper divisors (171529669).

385481331 is a wasteful number, since it uses less digits than its factorization.

385481331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15746 (or 15743 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 385481331 is about 19633.6784887601. The cubic root of 385481331 is about 727.7816757418.

The spelling of 385481331 in words is "three hundred eighty-five million, four hundred eighty-one thousand, three hundred thirty-one".