931485213 has 12 divisors (see below), whose sum is σ = 1346066748. Its totient is φ = 620718720.

The previous prime is 931485173. The next prime is 931485227. The reversal of 931485213 is 312584139.

931485213 is a `hidden beast` number, since 93 + 1 + 48 + 521 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 488719449 + 442765764 = 22107^2 + 21042^2 .

It is not a de Polignac number, because 931485213 - 2²⁸ = 663049757 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (931485263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343 + ... + 43163.

It is an arithmetic number, because the mean of its divisors is an integer number (112172229).

Almost surely, 2^931485213 is an apocalyptic number.

It is an amenable number.

931485213 is a deficient number, since it is larger than the sum of its proper divisors (414581535).

931485213 is a wasteful number, since it uses less digits than its factorization.

931485213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45244 (or 45241 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 931485213 is about 30520.2426759684. The cubic root of 931485213 is about 976.6193429268.

The spelling of 931485213 in words is "nine hundred thirty-one million, four hundred eighty-five thousand, two hundred thirteen".