16231313149 has 2 divisors, whose sum is σ = 16231313150. Its totient is φ = 16231313148.

The previous prime is 16231313113. The next prime is 16231313201. The reversal of 16231313149 is 94131313261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14612457924 + 1618855225 = 120882^2 + 40235^2 .

It is a cyclic number.

It is not a de Polignac number, because 16231313149 - 2⁹ = 16231312637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16231317149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8115656574 + 8115656575.

It is an arithmetic number, because the mean of its divisors is an integer number (8115656575).

Almost surely, 2^16231313149 is an apocalyptic number.

It is an amenable number.

16231313149 is a deficient number, since it is larger than the sum of its proper divisors (1).

16231313149 is an equidigital number, since it uses as much as digits as its factorization.

16231313149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The spelling of 16231313149 in words is "sixteen billion, two hundred thirty-one million, three hundred thirteen thousand, one hundred forty-nine".