20011523230 has 64 divisors (see below), whose sum is σ = 37656990720. Its totient is φ = 7650457984.

The previous prime is 20011523153. The next prime is 20011523239. The reversal of 20011523230 is 3232511002.

It is a super-2 number, since 2×20011523230² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20011523198 and 20011523207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011523239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5652801 + ... + 5656339.

It is an arithmetic number, because the mean of its divisors is an integer number (588390480).

Almost surely, 2^20011523230 is an apocalyptic number.

20011523230 is a deficient number, since it is larger than the sum of its proper divisors (17645467490).

20011523230 is a wasteful number, since it uses less digits than its factorization.

20011523230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3873.

The product of its (nonzero) digits is 360, while the sum is 19.

The spelling of 20011523230 in words is "twenty billion, eleven million, five hundred twenty-three thousand, two hundred thirty".