63893131 has 2 divisors, whose sum is σ = 63893132. Its totient is φ = 63893130.

The previous prime is 63893107. The next prime is 63893153. The reversal of 63893131 is 13139836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63893131 - 2¹⁷ = 63762059 is a prime.

It is a super-2 number, since 2×63893131² = 8164664377966322, which contains 22 as substring.

It is equal to p_3779143 and since 63893131 and 3779143 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (63893831) 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, 31946565 + 31946566.

It is an arithmetic number, because the mean of its divisors is an integer number (31946566).

Almost surely, 2^63893131 is an apocalyptic number.

63893131 is a deficient number, since it is larger than the sum of its proper divisors (1).

63893131 is an equidigital number, since it uses as much as digits as its factorization.

63893131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 63893131 is about 7993.3178968436. The cubic root of 63893131 is about 399.7772322093. Note that the first 3 decimals are identical.

The spelling of 63893131 in words is "sixty-three million, eight hundred ninety-three thousand, one hundred thirty-one".