63431429 has 2 divisors, whose sum is σ = 63431430. Its totient is φ = 63431428.

The previous prime is 63431393. The next prime is 63431479. The reversal of 63431429 is 92413436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59706529 + 3724900 = 7727^2 + 1930^2 .

It is a cyclic number.

It is not a de Polignac number, because 63431429 - 2²⁴ = 46654213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63431395 and 63431404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63431479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31715714 + 31715715.

It is an arithmetic number, because the mean of its divisors is an integer number (31715715).

Almost surely, 2^63431429 is an apocalyptic number.

It is an amenable number.

63431429 is a deficient number, since it is larger than the sum of its proper divisors (1).

63431429 is an equidigital number, since it uses as much as digits as its factorization.

63431429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 63431429 is about 7964.3850358957. The cubic root of 63431429 is about 398.8119519313.

The spelling of 63431429 in words is "sixty-three million, four hundred thirty-one thousand, four hundred twenty-nine".