113203220312 has 128 divisors (see below), whose sum is σ = 273158645760. Its totient is φ = 42748231680.

The previous prime is 113203220293. The next prime is 113203220321. The reversal of 113203220312 is 213022302311.

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, 8415512 + ... + 8428952.

It is an arithmetic number, because the mean of its divisors is an integer number (2134051920).

Almost surely, 2^113203220312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113203220312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136579322880).

113203220312 is an abundant number, since it is smaller than the sum of its proper divisors (159955425448).

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

113203220312 is a wasteful number, since it uses less digits than its factorization.

113203220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13993 (or 13989 counting only the distinct ones).

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

Adding to 113203220312 its reverse (213022302311), we get a palindrome (326225522623).

The spelling of 113203220312 in words is "one hundred thirteen billion, two hundred three million, two hundred twenty thousand, three hundred twelve".