31293343971499 has 2 divisors, whose sum is σ = 31293343971500. Its totient is φ = 31293343971498.

The previous prime is 31293343971443. The next prime is 31293343971511. The reversal of 31293343971499 is 99417934339213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31293343971499 - 2⁴¹ = 29094320715947 is a prime.

It is a super-2 number, since 2×31293343971499² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31293343971299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15646671985749 + 15646671985750.

It is an arithmetic number, because the mean of its divisors is an integer number (15646671985750).

Almost surely, 2^{31293343971499} is an apocalyptic number.

31293343971499 is a deficient number, since it is larger than the sum of its proper divisors (1).

31293343971499 is an equidigital number, since it uses as much as digits as its factorization.

31293343971499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119042784, while the sum is 67.

The spelling of 31293343971499 in words is "thirty-one trillion, two hundred ninety-three billion, three hundred forty-three million, nine hundred seventy-one thousand, four hundred ninety-nine".