131230223136040 has 128 divisors (see below), whose sum is σ = 352164625344000. Its totient is φ = 43031641771008.

The previous prime is 131230223135987. The next prime is 131230223136043. The reversal of 131230223136040 is 40631322032131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131230223135993 and 131230223136011.

It is not an unprimeable number, because it can be changed into a prime (131230223136043) 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, 50701666 + ... + 53227054.

It is an arithmetic number, because the mean of its divisors is an integer number (2751286135500).

Almost surely, 2^{131230223136040} is an apocalyptic number.

131230223136040 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 131230223136040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176082312672000).

131230223136040 is an abundant number, since it is smaller than the sum of its proper divisors (220934402207960).

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

131230223136040 is a wasteful number, since it uses less digits than its factorization.

131230223136040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533499 (or 2533495 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 131230223136040 its reverse (40631322032131), we get a palindrome (171861545168171).

The spelling of 131230223136040 in words is "one hundred thirty-one trillion, two hundred thirty billion, two hundred twenty-three million, one hundred thirty-six thousand, forty".