831880745 has 4 divisors (see below), whose sum is σ = 998256900. Its totient is φ = 665504592.

The previous prime is 831880733. The next prime is 831880757. The reversal of 831880745 is 547088138.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (831880733) and next prime (831880757).

It can be written as a sum of positive squares in 2 ways, for example, as 564917824 + 266962921 = 23768^2 + 16339^2 .

It is a cyclic number.

It is not a de Polignac number, because 831880745 - 2⁶ = 831880681 is a prime.

It is a super-3 number, since 3×831880745³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 831880696 and 831880705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83188070 + ... + 83188079.

It is an arithmetic number, because the mean of its divisors is an integer number (249564225).

Almost surely, 2^831880745 is an apocalyptic number.

It is an amenable number.

831880745 is a deficient number, since it is larger than the sum of its proper divisors (166376155).

831880745 is a wasteful number, since it uses less digits than its factorization.

831880745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166376154.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 831880745 is about 28842.3429180086. The cubic root of 831880745 is about 940.4889356946.

The spelling of 831880745 in words is "eight hundred thirty-one million, eight hundred eighty thousand, seven hundred forty-five".