31423232369 has 2 divisors, whose sum is σ = 31423232370. Its totient is φ = 31423232368.

The previous prime is 31423232311. The next prime is 31423232471. The reversal of 31423232369 is 96323232413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30090106225 + 1333126144 = 173465^2 + 36512^2 .

It is a cyclic number.

It is not a de Polignac number, because 31423232369 - 2¹² = 31423228273 is a prime.

It is a super-2 number, since 2×31423232369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31423234369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15711616184 + 15711616185.

It is an arithmetic number, because the mean of its divisors is an integer number (15711616185).

Almost surely, 2^31423232369 is an apocalyptic number.

It is an amenable number.

31423232369 is a deficient number, since it is larger than the sum of its proper divisors (1).

31423232369 is an equidigital number, since it uses as much as digits as its factorization.

31423232369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 38.

The spelling of 31423232369 in words is "thirty-one billion, four hundred twenty-three million, two hundred thirty-two thousand, three hundred sixty-nine".