131230223220 has 48 divisors (see below), whose sum is σ = 367697756160. Its totient is φ = 34970618496.

The previous prime is 131230223101. The next prime is 131230223221. The reversal of 131230223220 is 22322032131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131230223221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665460 + ... + 839819.

It is an arithmetic number, because the mean of its divisors is an integer number (7660369920).

Almost surely, 2^131230223220 is an apocalyptic number.

131230223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131230223220 is an abundant number, since it is smaller than the sum of its proper divisors (236467532940).

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

131230223220 is a wasteful number, since it uses less digits than its factorization.

131230223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506744 (or 1506742 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 131230223220 its reverse (22322032131), we get a palindrome (153552255351).

The spelling of 131230223220 in words is "one hundred thirty-one billion, two hundred thirty million, two hundred twenty-three thousand, two hundred twenty".