13203312131 has 2 divisors, whose sum is σ = 13203312132. Its totient is φ = 13203312130.

The previous prime is 13203312121. The next prime is 13203312149. The reversal of 13203312131 is 13121330231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13203312131 is a prime.

It is a super-2 number, since 2×13203312131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13203312121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6601656065 + 6601656066.

It is an arithmetic number, because the mean of its divisors is an integer number (6601656066).

Almost surely, 2^13203312131 is an apocalyptic number.

13203312131 is a deficient number, since it is larger than the sum of its proper divisors (1).

13203312131 is an equidigital number, since it uses as much as digits as its factorization.

13203312131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 13203312131 its reverse (13121330231), we get a palindrome (26324642362).

The spelling of 13203312131 in words is "thirteen billion, two hundred three million, three hundred twelve thousand, one hundred thirty-one".