2831374561 has 4 divisors (see below), whose sum is σ = 2835792324. Its totient is φ = 2826956800.

The previous prime is 2831374489. The next prime is 2831374583. The reversal of 2831374561 is 1654731382.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1320886336 + 1510488225 = 36344^2 + 38865^2 .

It is a cyclic number.

It is not a de Polignac number, because 2831374561 - 2²⁹ = 2294503649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2831374591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2207920 + ... + 2209201.

It is an arithmetic number, because the mean of its divisors is an integer number (708948081).

Almost surely, 2^2831374561 is an apocalyptic number.

It is an amenable number.

2831374561 is a deficient number, since it is larger than the sum of its proper divisors (4417763).

2831374561 is an equidigital number, since it uses as much as digits as its factorization.

2831374561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417762.

The product of its digits is 120960, while the sum is 40.

The square root of 2831374561 is about 53210.6620988689. The cubic root of 2831374561 is about 1414.7046312112.

The spelling of 2831374561 in words is "two billion, eight hundred thirty-one million, three hundred seventy-four thousand, five hundred sixty-one".