385115233 has 2 divisors, whose sum is σ = 385115234. Its totient is φ = 385115232.

The previous prime is 385115231. The next prime is 385115257. The reversal of 385115233 is 332511583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289408144 + 95707089 = 17012^2 + 9783^2 .

It is a cyclic number.

It is not a de Polignac number, because 385115233 - 2¹ = 385115231 is a prime.

Together with 385115231, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 385115195 and 385115204.

It is not a weakly prime, because it can be changed into another prime (385115231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192557616 + 192557617.

It is an arithmetic number, because the mean of its divisors is an integer number (192557617).

Almost surely, 2^385115233 is an apocalyptic number.

It is an amenable number.

385115233 is a deficient number, since it is larger than the sum of its proper divisors (1).

385115233 is an equidigital number, since it uses as much as digits as its factorization.

385115233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 385115233 is about 19624.3530594005. The cubic root of 385115233 is about 727.5512073323.

The spelling of 385115233 in words is "three hundred eighty-five million, one hundred fifteen thousand, two hundred thirty-three".