3130981409 has 4 divisors (see below), whose sum is σ = 3315156804. Its totient is φ = 2946806016.

The previous prime is 3130981397. The next prime is 3130981411. The reversal of 3130981409 is 9041890313.

It is a happy number.

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 2497200784 + 633780625 = 49972^2 + 25175^2 .

It is a cyclic number.

It is not a de Polignac number, because 3130981409 - 2⁴ = 3130981393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3130981439) 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, 92087672 + ... + 92087705.

It is an arithmetic number, because the mean of its divisors is an integer number (828789201).

Almost surely, 2^3130981409 is an apocalyptic number.

It is an amenable number.

3130981409 is a deficient number, since it is larger than the sum of its proper divisors (184175395).

3130981409 is a wasteful number, since it uses less digits than its factorization.

3130981409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184175394.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 3130981409 is about 55955.1732103476. The cubic root of 3130981409 is about 1462.9410610591.

The spelling of 3130981409 in words is "three billion, one hundred thirty million, nine hundred eighty-one thousand, four hundred nine".