931263145 has 8 divisors (see below), whose sum is σ = 1183252104. Its totient is φ = 701186304.

The previous prime is 931263133. The next prime is 931263161. The reversal of 931263145 is 541362139.

It can be written as a sum of positive squares in 4 ways, for example, as 30603024 + 900660121 = 5532^2 + 30011^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 931263145 - 2²⁹ = 394392233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 931263145.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5477934 + ... + 5478103.

It is an arithmetic number, because the mean of its divisors is an integer number (147906513).

Almost surely, 2^931263145 is an apocalyptic number.

It is an amenable number.

931263145 is a deficient number, since it is larger than the sum of its proper divisors (251988959).

931263145 is a wasteful number, since it uses less digits than its factorization.

931263145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10956059.

The product of its digits is 19440, while the sum is 34.

The square root of 931263145 is about 30516.6044146461. The cubic root of 931263145 is about 976.5417274020.

The spelling of 931263145 in words is "nine hundred thirty-one million, two hundred sixty-three thousand, one hundred forty-five".