131123320002 has 24 divisors (see below), whose sum is σ = 284190356736. Its totient is φ = 43693953336.

The previous prime is 131123320001. The next prime is 131123320121. The reversal of 131123320002 is 200023321131.

It is a super-3 number, since 3×131123320002³ (a number of 34 digits) contains 333 as substring.

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 (131123320001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1093078 + ... + 1207089.

It is an arithmetic number, because the mean of its divisors is an integer number (11841264864).

Almost surely, 2^131123320002 is an apocalyptic number.

131123320002 is an abundant number, since it is smaller than the sum of its proper divisors (153067036734).

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

131123320002 is a wasteful number, since it uses less digits than its factorization.

131123320002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303342 (or 2303339 counting only the distinct ones).

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

Adding to 131123320002 its reverse (200023321131), we get a palindrome (331146641133).

The spelling of 131123320002 in words is "one hundred thirty-one billion, one hundred twenty-three million, three hundred twenty thousand, two".