1063421231 has 4 divisors (see below), whose sum is σ = 1063537200. Its totient is φ = 1063305264.

The previous prime is 1063421207. The next prime is 1063421239. The reversal of 1063421231 is 1321243601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1321243601 = 19543 ⋅67607.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1063421231 is a prime.

It is a super-2 number, since 2×1063421231² = 2261729429083110722, 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 = 1063421197 and 1063421206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063421239) 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 in 3 ways as a sum of consecutive naturals, for example, 42926 + ... + 63003.

It is an arithmetic number, because the mean of its divisors is an integer number (265884300).

Almost surely, 2^1063421231 is an apocalyptic number.

1063421231 is a deficient number, since it is larger than the sum of its proper divisors (115969).

1063421231 is a wasteful number, since it uses less digits than its factorization.

1063421231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115968.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1063421231 is about 32610.1400027660. The cubic root of 1063421231 is about 1020.7086037931.

Adding to 1063421231 its reverse (1321243601), we get a palindrome (2384664832).

The spelling of 1063421231 in words is "one billion, sixty-three million, four hundred twenty-one thousand, two hundred thirty-one".