31212421199 has 2 divisors, whose sum is σ = 31212421200. Its totient is φ = 31212421198.

The previous prime is 31212421157. The next prime is 31212421241. The reversal of 31212421199 is 99112421213.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (31212421157) and next prime (31212421241).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31212421199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31212421109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15606210599 + 15606210600.

It is an arithmetic number, because the mean of its divisors is an integer number (15606210600).

Almost surely, 2^31212421199 is an apocalyptic number.

31212421199 is a deficient number, since it is larger than the sum of its proper divisors (1).

31212421199 is an equidigital number, since it uses as much as digits as its factorization.

31212421199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The spelling of 31212421199 in words is "thirty-one billion, two hundred twelve million, four hundred twenty-one thousand, one hundred ninety-nine".