131321002123 has 8 divisors (see below), whose sum is σ = 133701580800. Its totient is φ = 128945583528.

The previous prime is 131321002117. The next prime is 131321002133. The reversal of 131321002123 is 321200123131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131321002123 - 2²¹ = 131318904971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131321002123.

It is not an unprimeable number, because it can be changed into a prime (131321002103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238643 + ... + 1340476.

It is an arithmetic number, because the mean of its divisors is an integer number (16712697600).

Almost surely, 2^131321002123 is an apocalyptic number.

131321002123 is a deficient number, since it is larger than the sum of its proper divisors (2380578677).

131321002123 is an equidigital number, since it uses as much as digits as its factorization.

131321002123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580041.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 131321002123 its reverse (321200123131), we get a palindrome (452521125254).

The spelling of 131321002123 in words is "one hundred thirty-one billion, three hundred twenty-one million, two thousand, one hundred twenty-three".