131321230340002 has 4 divisors (see below), whose sum is σ = 196981845510006. Its totient is φ = 65660615170000.

The previous prime is 131321230339987. The next prime is 131321230340009. The reversal of 131321230340002 is 200043032123131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 73423116675441 + 57898113664561 = 8568729^2 + 7609081^2 .

It is not an unprimeable number, because it can be changed into a prime (131321230340009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32830307584999 + ... + 32830307585002.

Almost surely, 2^{131321230340002} is an apocalyptic number.

131321230340002 is a deficient number, since it is larger than the sum of its proper divisors (65660615170004).

131321230340002 is an equidigital number, since it uses as much as digits as its factorization.

131321230340002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65660615170003.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 131321230340002 its reverse (200043032123131), we get a palindrome (331364262463133).

The spelling of 131321230340002 in words is "one hundred thirty-one trillion, three hundred twenty-one billion, two hundred thirty million, three hundred forty thousand, two".