13131232091 has 2 divisors, whose sum is σ = 13131232092. Its totient is φ = 13131232090.

The previous prime is 13131232069. The next prime is 13131232129. The reversal of 13131232091 is 19023213131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13131232091 - 2¹⁰ = 13131231067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13131232091.

It is not a weakly prime, because it can be changed into another prime (13131238091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6565616045 + 6565616046.

It is an arithmetic number, because the mean of its divisors is an integer number (6565616046).

Almost surely, 2^13131232091 is an apocalyptic number.

13131232091 is a deficient number, since it is larger than the sum of its proper divisors (1).

13131232091 is an equidigital number, since it uses as much as digits as its factorization.

13131232091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 13131232091 in words is "thirteen billion, one hundred thirty-one million, two hundred thirty-two thousand, ninety-one".