385860731 has 2 divisors, whose sum is σ = 385860732. Its totient is φ = 385860730.

The previous prime is 385860707. The next prime is 385860773. The reversal of 385860731 is 137068583.

It is a weak prime.

It is an emirp because it is prime and its reverse (137068583) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385860731 is a prime.

It is a super-2 number, since 2×385860731² = 297777007455708722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (385860701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192930365 + 192930366.

It is an arithmetic number, because the mean of its divisors is an integer number (192930366).

Almost surely, 2^385860731 is an apocalyptic number.

385860731 is a deficient number, since it is larger than the sum of its proper divisors (1).

385860731 is an equidigital number, since it uses as much as digits as its factorization.

385860731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 385860731 is about 19643.3380819045. The cubic root of 385860731 is about 728.0203641961.

The spelling of 385860731 in words is "three hundred eighty-five million, eight hundred sixty thousand, seven hundred thirty-one".