3131011409 has 2 divisors, whose sum is σ = 3131011410. Its totient is φ = 3131011408.

The previous prime is 3131011393. The next prime is 3131011427. The reversal of 3131011409 is 9041101313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3089692225 + 41319184 = 55585^2 + 6428^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131011409 - 2⁴ = 3131011393 is a prime.

It is not a weakly prime, because it can be changed into another prime (3131011489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565505704 + 1565505705.

It is an arithmetic number, because the mean of its divisors is an integer number (1565505705).

Almost surely, 2^3131011409 is an apocalyptic number.

It is an amenable number.

3131011409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131011409 is an equidigital number, since it uses as much as digits as its factorization.

3131011409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 3131011409 is about 55955.4412814339. The cubic root of 3131011409 is about 1462.9457335122.

The spelling of 3131011409 in words is "three billion, one hundred thirty-one million, eleven thousand, four hundred nine".