131113230420 has 72 divisors (see below), whose sum is σ = 373234653792. Its totient is φ = 34390296960.

The previous prime is 131113230419. The next prime is 131113230431. The reversal of 131113230420 is 24032311131.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 70374 + ... + 516893.

It is an arithmetic number, because the mean of its divisors is an integer number (5183814636).

Almost surely, 2^131113230420 is an apocalyptic number.

131113230420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131113230420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186617326896).

131113230420 is an abundant number, since it is smaller than the sum of its proper divisors (242121423372).

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

131113230420 is a wasteful number, since it uses less digits than its factorization.

131113230420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587401 (or 587338 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131113230420 its reverse (24032311131), we get a palindrome (155145541551).

The spelling of 131113230420 in words is "one hundred thirty-one billion, one hundred thirteen million, two hundred thirty thousand, four hundred twenty".