63212531399 has 2 divisors, whose sum is σ = 63212531400. Its totient is φ = 63212531398.

The previous prime is 63212531323. The next prime is 63212531401. The reversal of 63212531399 is 99313521236.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63212531399 is a prime.

Together with 63212531401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63212530399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31606265699 + 31606265700.

It is an arithmetic number, because the mean of its divisors is an integer number (31606265700).

Almost surely, 2^63212531399 is an apocalyptic number.

63212531399 is a deficient number, since it is larger than the sum of its proper divisors (1).

63212531399 is an equidigital number, since it uses as much as digits as its factorization.

63212531399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 44.

The spelling of 63212531399 in words is "sixty-three billion, two hundred twelve million, five hundred thirty-one thousand, three hundred ninety-nine".