63255431 has 4 divisors (see below), whose sum is σ = 63276312. Its totient is φ = 63234552.

The previous prime is 63255421. The next prime is 63255461. The reversal of 63255431 is 13455236.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63255431 is a prime.

It is a super-2 number, since 2×63255431² = 8002499101991522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63255394 and 63255403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63255421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4925 + ... + 12278.

It is an arithmetic number, because the mean of its divisors is an integer number (15819078).

Almost surely, 2^63255431 is an apocalyptic number.

63255431 is a deficient number, since it is larger than the sum of its proper divisors (20881).

63255431 is a wasteful number, since it uses less digits than its factorization.

63255431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20880.

The product of its digits is 10800, while the sum is 29.

The square root of 63255431 is about 7953.3282970087. The cubic root of 63255431 is about 398.4427599593.

The spelling of 63255431 in words is "sixty-three million, two hundred fifty-five thousand, four hundred thirty-one".