131302123 has 4 divisors (see below), whose sum is σ = 131352768. Its totient is φ = 131251480.

The previous prime is 131302117. The next prime is 131302139. The reversal of 131302123 is 321203131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131302123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131302097 and 131302106.

It is not an unprimeable number, because it can be changed into a prime (131302183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21211 + ... + 26692.

It is an arithmetic number, because the mean of its divisors is an integer number (32838192).

Almost surely, 2^131302123 is an apocalyptic number.

131302123 is a deficient number, since it is larger than the sum of its proper divisors (50645).

131302123 is an equidigital number, since it uses as much as digits as its factorization.

131302123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50644.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 131302123 is about 11458.7138458031. The cubic root of 131302123 is about 508.2654426816.

Adding to 131302123 its reverse (321203131), we get a palindrome (452505254).

The spelling of 131302123 in words is "one hundred thirty-one million, three hundred two thousand, one hundred twenty-three".