31542423324469 has 2 divisors, whose sum is σ = 31542423324470. Its totient is φ = 31542423324468.

The previous prime is 31542423324439. The next prime is 31542423324479. The reversal of 31542423324469 is 96442332424513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25115883980625 + 6426539343844 = 5011575^2 + 2535062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31542423324469 is a prime.

It is a super-2 number, since 2×31542423324469² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31542423324439) 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, 15771211662234 + 15771211662235.

It is an arithmetic number, because the mean of its divisors is an integer number (15771211662235).

Almost surely, 2^{31542423324469} is an apocalyptic number.

It is an amenable number.

31542423324469 is a deficient number, since it is larger than the sum of its proper divisors (1).

31542423324469 is an equidigital number, since it uses as much as digits as its factorization.

31542423324469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14929920, while the sum is 52.

The spelling of 31542423324469 in words is "thirty-one trillion, five hundred forty-two billion, four hundred twenty-three million, three hundred twenty-four thousand, four hundred sixty-nine".