31423141969 has 2 divisors, whose sum is σ = 31423141970. Its totient is φ = 31423141968.

The previous prime is 31423141961. The next prime is 31423141987. The reversal of 31423141969 is 96914132413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28666891969 + 2756250000 = 169313^2 + 52500^2 .

It is a cyclic number.

It is not a de Polignac number, because 31423141969 - 2³ = 31423141961 is a prime.

It is a super-2 number, since 2×31423141969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31423141961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15711570984 + 15711570985.

It is an arithmetic number, because the mean of its divisors is an integer number (15711570985).

Almost surely, 2^31423141969 is an apocalyptic number.

It is an amenable number.

31423141969 is a deficient number, since it is larger than the sum of its proper divisors (1).

31423141969 is an equidigital number, since it uses as much as digits as its factorization.

31423141969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 43.

The spelling of 31423141969 in words is "thirty-one billion, four hundred twenty-three million, one hundred forty-one thousand, nine hundred sixty-nine".