931038138 has 20 divisors (see below), whose sum is σ = 2086215450. Its totient is φ = 310345992.

The previous prime is 931038083. The next prime is 931038151. The reversal of 931038138 is 831830139.

It can be written as a sum of positive squares in only one way, i.e., 918271809 + 12766329 = 30303^2 + 3573^2 .

It is a Curzon number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 2873413 + ... + 2873736.

Almost surely, 2^931038138 is an apocalyptic number.

931038138 is an abundant number, since it is smaller than the sum of its proper divisors (1155177312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

931038138 is a wasteful number, since it uses less digits than its factorization.

931038138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747163 (or 5747154 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 931038138 is about 30512.9175596173. The cubic root of 931038138 is about 976.4630720743.

The spelling of 931038138 in words is "nine hundred thirty-one million, thirty-eight thousand, one hundred thirty-eight".