20311123232 has 24 divisors (see below), whose sum is σ = 40085318700. Its totient is φ = 10130724864.

The previous prime is 20311123207. The next prime is 20311123241. The reversal of 20311123232 is 23232111302.

It can be written as a sum of positive squares in 2 ways, for example, as 20290293136 + 20830096 = 142444^2 + 4564^2 .

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, 762857 + ... + 789032.

Almost surely, 2^20311123232 is an apocalyptic number.

It is an amenable number.

20311123232 is a deficient number, since it is larger than the sum of its proper divisors (19774195468).

20311123232 is a wasteful number, since it uses less digits than its factorization.

20311123232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552308 (or 1552300 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20311123232 its reverse (23232111302), we get a palindrome (43543234534).

The spelling of 20311123232 in words is "twenty billion, three hundred eleven million, one hundred twenty-three thousand, two hundred thirty-two".