3140400985 has 4 divisors (see below), whose sum is σ = 3768481188. Its totient is φ = 2512320784.

The previous prime is 3140400971. The next prime is 3140401001. The reversal of 3140400985 is 5890040413.

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 652087296 + 2488313689 = 25536^2 + 49883^2 .

It is a cyclic number.

It is not a de Polignac number, because 3140400985 - 2⁵ = 3140400953 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 3140400985.

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, 314040094 + ... + 314040103.

It is an arithmetic number, because the mean of its divisors is an integer number (942120297).

Almost surely, 2^3140400985 is an apocalyptic number.

It is an amenable number.

3140400985 is a deficient number, since it is larger than the sum of its proper divisors (628080203).

3140400985 is an equidigital number, since it uses as much as digits as its factorization.

3140400985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628080202.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 3140400985 is about 56039.2807323577. The cubic root of 3140400985 is about 1464.4066811959.

The spelling of 3140400985 in words is "three billion, one hundred forty million, four hundred thousand, nine hundred eighty-five".