131521402230 has 32 divisors (see below), whose sum is σ = 315722098944. Its totient is φ = 35064514656.

The previous prime is 131521402219. The next prime is 131521402237. The reversal of 131521402230 is 32204125131.

It is a self number, because there is not a number n which added to its sum of digits gives 131521402230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131521402237) 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, 354474 + ... + 623453.

It is an arithmetic number, because the mean of its divisors is an integer number (9866315592).

Almost surely, 2^131521402230 is an apocalyptic number.

131521402230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131521402230 is an abundant number, since it is smaller than the sum of its proper divisors (184200696714).

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

131521402230 is a wasteful number, since it uses less digits than its factorization.

131521402230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982420.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 131521402230 its reverse (32204125131), we get a palindrome (163725527361).

The spelling of 131521402230 in words is "one hundred thirty-one billion, five hundred twenty-one million, four hundred two thousand, two hundred thirty".