285387331007 has 4 divisors (see below), whose sum is σ = 285512888640. Its totient is φ = 285261773376.

The previous prime is 285387330973. The next prime is 285387331043. The reversal of 285387331007 is 700133783582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285387331007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285387331807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62775407 + ... + 62779952.

It is an arithmetic number, because the mean of its divisors is an integer number (71378222160).

Almost surely, 2^285387331007 is an apocalyptic number.

285387331007 is a deficient number, since it is larger than the sum of its proper divisors (125557633).

285387331007 is a wasteful number, since it uses less digits than its factorization.

285387331007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125557632.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 285387331007 in words is "two hundred eighty-five billion, three hundred eighty-seven million, three hundred thirty-one thousand, seven".