100331387 has 16 divisors (see below), whose sum is σ = 114518880. Its totient is φ = 87225600.

The previous prime is 100331369. The next prime is 100331389. The reversal of 100331387 is 783133001.

It is a cyclic number.

It is not a de Polignac number, because 100331387 - 2⁸ = 100331131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100331389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12212 + ... + 18702.

It is an arithmetic number, because the mean of its divisors is an integer number (7157430).

Almost surely, 2^100331387 is an apocalyptic number.

100331387 is a deficient number, since it is larger than the sum of its proper divisors (14187493).

100331387 is a wasteful number, since it uses less digits than its factorization.

100331387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6574.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 100331387 is about 10016.5556455301. Note that the first 3 decimals coincide. The cubic root of 100331387 is about 464.6710387713.

Adding to 100331387 its reverse (783133001), we get a palindrome (883464388).

The spelling of 100331387 in words is "one hundred million, three hundred thirty-one thousand, three hundred eighty-seven".