63898031 has 2 divisors, whose sum is σ = 63898032. Its totient is φ = 63898030.

The previous prime is 63897989. The next prime is 63898039. The reversal of 63898031 is 13089836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63898031 - 2¹⁰ = 63897007 is a prime.

It is a super-2 number, since 2×63898031² = 8165916731353922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63898039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31949015 + 31949016.

It is an arithmetic number, because the mean of its divisors is an integer number (31949016).

Almost surely, 2^63898031 is an apocalyptic number.

63898031 is a deficient number, since it is larger than the sum of its proper divisors (1).

63898031 is an equidigital number, since it uses as much as digits as its factorization.

63898031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 63898031 is about 7993.6243969804. The cubic root of 63898031 is about 399.7874516613.

The spelling of 63898031 in words is "sixty-three million, eight hundred ninety-eight thousand, thirty-one".