131230312002 has 32 divisors (see below), whose sum is σ = 291772623360. Its totient is φ = 43720981200.

The previous prime is 131230311973. The next prime is 131230312007. The reversal of 131230312002 is 200213032131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (131230312007) 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, 517453 + ... + 728160.

It is an arithmetic number, because the mean of its divisors is an integer number (9117894480).

Almost surely, 2^131230312002 is an apocalyptic number.

131230312002 is an abundant number, since it is smaller than the sum of its proper divisors (160542311358).

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

131230312002 is a wasteful number, since it uses less digits than its factorization.

131230312002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247575 (or 1247569 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 131230312002 its reverse (200213032131), we get a palindrome (331443344133).

The spelling of 131230312002 in words is "one hundred thirty-one billion, two hundred thirty million, three hundred twelve thousand, two".