31321234619 has 2 divisors, whose sum is σ = 31321234620. Its totient is φ = 31321234618.

The previous prime is 31321234577. The next prime is 31321234631. The reversal of 31321234619 is 91643212313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31321234619 is a prime.

It is a super-2 number, since 2×31321234619² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31321234669) 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, 15660617309 + 15660617310.

It is an arithmetic number, because the mean of its divisors is an integer number (15660617310).

Almost surely, 2^31321234619 is an apocalyptic number.

31321234619 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321234619 is an equidigital number, since it uses as much as digits as its factorization.

31321234619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The spelling of 31321234619 in words is "thirty-one billion, three hundred twenty-one million, two hundred thirty-four thousand, six hundred nineteen".