20310111232 has 22 divisors (see below), whose sum is σ = 40600390418. Its totient is φ = 10155055104.

The previous prime is 20310111229. The next prime is 20310111257. The reversal of 20310111232 is 23211101302.

It can be written as a sum of positive squares in only one way, i.e., 14500013056 + 5810098176 = 120416^2 + 76224^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9916023 + ... + 9918070.

Almost surely, 2^20310111232 is an apocalyptic number.

It is an amenable number.

20310111232 is a deficient number, since it is larger than the sum of its proper divisors (20290279186).

20310111232 is an equidigital number, since it uses as much as digits as its factorization.

20310111232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19834113 (or 19834095 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20310111232 its reverse (23211101302), we get a palindrome (43521212534).

The spelling of 20310111232 in words is "twenty billion, three hundred ten million, one hundred eleven thousand, two hundred thirty-two".