385232731 has 8 divisors (see below), whose sum is σ = 416680880. Its totient is φ = 354043872.

The previous prime is 385232711. The next prime is 385232737. The reversal of 385232731 is 137232583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 385232731 - 2⁹ = 385232219 is a prime.

It is a super-2 number, since 2×385232731² = 296808514067436722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385232737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61725 + ... + 67678.

It is an arithmetic number, because the mean of its divisors is an integer number (52085110).

Almost surely, 2^385232731 is an apocalyptic number.

385232731 is a deficient number, since it is larger than the sum of its proper divisors (31448149).

385232731 is a wasteful number, since it uses less digits than its factorization.

385232731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129645.

The product of its digits is 30240, while the sum is 34.

The square root of 385232731 is about 19627.3465093986. The cubic root of 385232731 is about 727.6251913523.

The spelling of 385232731 in words is "three hundred eighty-five million, two hundred thirty-two thousand, seven hundred thirty-one".