31424642329 has 2 divisors, whose sum is σ = 31424642330. Its totient is φ = 31424642328.

The previous prime is 31424642321. The next prime is 31424642449. The reversal of 31424642329 is 92324642413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23623690000 + 7800952329 = 153700^2 + 88323^2 .

It is a cyclic number.

It is not a de Polignac number, because 31424642329 - 2³ = 31424642321 is a prime.

It is a super-3 number, since 3×31424642329³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31424642291 and 31424642300.

It is not a weakly prime, because it can be changed into another prime (31424642321) 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, 15712321164 + 15712321165.

It is an arithmetic number, because the mean of its divisors is an integer number (15712321165).

Almost surely, 2^31424642329 is an apocalyptic number.

It is an amenable number.

31424642329 is a deficient number, since it is larger than the sum of its proper divisors (1).

31424642329 is an equidigital number, since it uses as much as digits as its factorization.

31424642329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 40.

The spelling of 31424642329 in words is "thirty-one billion, four hundred twenty-four million, six hundred forty-two thousand, three hundred twenty-nine".