20523240232 has 32 divisors (see below), whose sum is σ = 41986486080. Its totient is φ = 9327160960.

The previous prime is 20523240223. The next prime is 20523240247. The reversal of 20523240232 is 23204232502.

It is a happy number.

It is a super-3 number, since 3×20523240232³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20523240197 and 20523240206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616773 + ... + 649195.

It is an arithmetic number, because the mean of its divisors is an integer number (1312077690).

Almost surely, 2^20523240232 is an apocalyptic number.

20523240232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20523240232 is an abundant number, since it is smaller than the sum of its proper divisors (21463245848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20523240232 is a wasteful number, since it uses less digits than its factorization.

20523240232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39633 (or 39629 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 20523240232 its reverse (23204232502), we get a palindrome (43727472734).

The spelling of 20523240232 in words is "twenty billion, five hundred twenty-three million, two hundred forty thousand, two hundred thirty-two".