385514831 has 16 divisors (see below), whose sum is σ = 444909024. Its totient is φ = 330875904.

The previous prime is 385514809. The next prime is 385514837. The reversal of 385514831 is 138415583.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385514831 is a prime.

It is a super-2 number, since 2×385514831² = 297243369841917122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385514837) 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, 7835 + ... + 28851.

It is an arithmetic number, because the mean of its divisors is an integer number (27806814).

Almost surely, 2^385514831 is an apocalyptic number.

385514831 is a deficient number, since it is larger than the sum of its proper divisors (59394193).

385514831 is a wasteful number, since it uses less digits than its factorization.

385514831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21130.

The product of its digits is 57600, while the sum is 38.

The square root of 385514831 is about 19634.5315961446. The cubic root of 385514831 is about 727.8027575927.

The spelling of 385514831 in words is "three hundred eighty-five million, five hundred fourteen thousand, eight hundred thirty-one".