63431197 has 2 divisors, whose sum is σ = 63431198. Its totient is φ = 63431196.

The previous prime is 63431167. The next prime is 63431213. The reversal of 63431197 is 79113436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32194276 + 31236921 = 5674^2 + 5589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63431197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63431107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31715598 + 31715599.

It is an arithmetic number, because the mean of its divisors is an integer number (31715599).

Almost surely, 2^63431197 is an apocalyptic number.

It is an amenable number.

63431197 is a deficient number, since it is larger than the sum of its proper divisors (1).

63431197 is an equidigital number, since it uses as much as digits as its factorization.

63431197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 34.

The square root of 63431197 is about 7964.3704710416. The cubic root of 63431197 is about 398.8114657134.

The spelling of 63431197 in words is "sixty-three million, four hundred thirty-one thousand, one hundred ninety-seven".