1231304463 has 16 divisors (see below), whose sum is σ = 1873457760. Its totient is φ = 798683328.

The previous prime is 1231304461. The next prime is 1231304479. The reversal of 1231304463 is 3644031321.

It is not a de Polignac number, because 1231304463 - 2¹ = 1231304461 is a prime.

It is a super-2 number, since 2×1231304463² = 3032221361207436738, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231304461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615270 + ... + 617267.

It is an arithmetic number, because the mean of its divisors is an integer number (117091110).

Almost surely, 2^1231304463 is an apocalyptic number.

1231304463 is a deficient number, since it is larger than the sum of its proper divisors (642153297).

1231304463 is a wasteful number, since it uses less digits than its factorization.

1231304463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232583 (or 1232577 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 1231304463 is about 35089.9481760803. The cubic root of 1231304463 is about 1071.8199042963.

Adding to 1231304463 its reverse (3644031321), we get a palindrome (4875335784).

The spelling of 1231304463 in words is "one billion, two hundred thirty-one million, three hundred four thousand, four hundred sixty-three".