831712945 has 16 divisors (see below), whose sum is σ = 1144679040. Its totient is φ = 568295424.

The previous prime is 831712933. The next prime is 831712951. The reversal of 831712945 is 549217138.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-831712945 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 831712898 and 831712907.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32080 + ... + 51889.

It is an arithmetic number, because the mean of its divisors is an integer number (71542440).

Almost surely, 2^831712945 is an apocalyptic number.

It is an amenable number.

831712945 is a deficient number, since it is larger than the sum of its proper divisors (312966095).

831712945 is a wasteful number, since it uses less digits than its factorization.

831712945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84264.

The product of its digits is 60480, while the sum is 40.

The square root of 831712945 is about 28839.4338536664. The cubic root of 831712945 is about 940.4256955982.

The spelling of 831712945 in words is "eight hundred thirty-one million, seven hundred twelve thousand, nine hundred forty-five".