1231220302232 has 16 divisors (see below), whose sum is σ = 2308562677800. Its totient is φ = 615603588160.

The previous prime is 1231220302189. The next prime is 1231220302321. The reversal of 1231220302232 is 2322030221321.

It is a junction number, because it is equal to n+sod(n) for n = 1231220302198 and 1231220302207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28619 + ... + 1569477.

Almost surely, 2^{1231220302232} is an apocalyptic number.

It is an amenable number.

1231220302232 is a deficient number, since it is larger than the sum of its proper divisors (1077342375568).

1231220302232 is a wasteful number, since it uses less digits than its factorization.

1231220302232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640746 (or 1640742 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 1231220302232 its reverse (2322030221321), we get a palindrome (3553250523553).

The spelling of 1231220302232 in words is "one trillion, two hundred thirty-one billion, two hundred twenty million, three hundred two thousand, two hundred thirty-two".