20311330232 has 8 divisors (see below), whose sum is σ = 38083744200. Its totient is φ = 10155665112.

The previous prime is 20311330223. The next prime is 20311330253. The reversal of 20311330232 is 23203311302.

It is a tau number, because it is divible by the number of its divisors (8).

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, 1269458132 + ... + 1269458147.

It is an arithmetic number, because the mean of its divisors is an integer number (4760468025).

Almost surely, 2^20311330232 is an apocalyptic number.

It is an amenable number.

20311330232 is a deficient number, since it is larger than the sum of its proper divisors (17772413968).

20311330232 is a wasteful number, since it uses less digits than its factorization.

20311330232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538916285 (or 2538916281 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20311330232 its reverse (23203311302), we get a palindrome (43514641534).

The spelling of 20311330232 in words is "twenty billion, three hundred eleven million, three hundred thirty thousand, two hundred thirty-two".