131323003002 has 20 divisors (see below), whose sum is σ = 294260803386. Its totient is φ = 43774334280.

The previous prime is 131323002991. The next prime is 131323003003. The reversal of 131323003002 is 200300323131.

131323003002 is a `hidden beast` number, since 1 + 31 + 32 + 300 + 300 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 125875234521 + 5447768481 = 354789^2 + 73809^2 .

It is a super-2 number, since 2×131323003002² (a number of 23 digits) contains 22 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 (131323003003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 405317749 + ... + 405318072.

Almost surely, 2^131323003002 is an apocalyptic number.

131323003002 is an abundant number, since it is smaller than the sum of its proper divisors (162937800384).

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

131323003002 is an equidigital number, since it uses as much as digits as its factorization.

131323003002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810635835 (or 810635826 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 131323003002 its reverse (200300323131), we get a palindrome (331623326133).

The spelling of 131323003002 in words is "one hundred thirty-one billion, three hundred twenty-three million, three thousand, two".