20131012230 has 64 divisors (see below), whose sum is σ = 58464529920. Its totient is φ = 4330704384.

The previous prime is 20131012217. The next prime is 20131012241. The reversal of 20131012230 is 3221013102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2815900 + ... + 2823039.

It is an arithmetic number, because the mean of its divisors is an integer number (913508280).

Almost surely, 2^20131012230 is an apocalyptic number.

20131012230 is an abundant number, since it is smaller than the sum of its proper divisors (38333517690).

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

20131012230 is a wasteful number, since it uses less digits than its factorization.

20131012230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5638973.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20131012230 its reverse (3221013102), we get a palindrome (23352025332).

The spelling of 20131012230 in words is "twenty billion, one hundred thirty-one million, twelve thousand, two hundred thirty".