31604141869 has 2 divisors, whose sum is σ = 31604141870. Its totient is φ = 31604141868.

The previous prime is 31604141867. The next prime is 31604141909. The reversal of 31604141869 is 96814140613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25867897225 + 5736244644 = 160835^2 + 75738^2 .

It is a cyclic number.

It is not a de Polignac number, because 31604141869 - 2¹ = 31604141867 is a prime.

It is a super-2 number, since 2×31604141869² (a number of 22 digits) contains 22 as substring.

Together with 31604141867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31604141867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15802070934 + 15802070935.

It is an arithmetic number, because the mean of its divisors is an integer number (15802070935).

Almost surely, 2^31604141869 is an apocalyptic number.

It is an amenable number.

31604141869 is a deficient number, since it is larger than the sum of its proper divisors (1).

31604141869 is an equidigital number, since it uses as much as digits as its factorization.

31604141869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 31604141869 in words is "thirty-one billion, six hundred four million, one hundred forty-one thousand, eight hundred sixty-nine".