385112531 has 2 divisors, whose sum is σ = 385112532. Its totient is φ = 385112530.

The previous prime is 385112513. The next prime is 385112569. The reversal of 385112531 is 135211583.

It is a happy number.

Together with previous prime (385112513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 385112531 - 2²² = 380918227 is a prime.

It is a super-2 number, since 2×385112531² = 296623323066451922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 385112494 and 385112503.

It is not a weakly prime, because it can be changed into another prime (385112131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192556265 + 192556266.

It is an arithmetic number, because the mean of its divisors is an integer number (192556266).

Almost surely, 2^385112531 is an apocalyptic number.

385112531 is a deficient number, since it is larger than the sum of its proper divisors (1).

385112531 is an equidigital number, since it uses as much as digits as its factorization.

385112531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 29.

The square root of 385112531 is about 19624.2842162460. The cubic root of 385112531 is about 727.5495058087.

The spelling of 385112531 in words is "three hundred eighty-five million, one hundred twelve thousand, five hundred thirty-one".