16311506329 has 2 divisors, whose sum is σ = 16311506330. Its totient is φ = 16311506328.

The previous prime is 16311506311. The next prime is 16311506347. The reversal of 16311506329 is 92360511361.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (16311506311) and next prime (16311506347).

It can be written as a sum of positive squares in only one way, i.e., 14990329225 + 1321177104 = 122435^2 + 36348^2 .

It is a cyclic number.

It is not a de Polignac number, because 16311506329 - 2¹⁵ = 16311473561 is a prime.

It is not a weakly prime, because it can be changed into another prime (16311006329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8155753164 + 8155753165.

It is an arithmetic number, because the mean of its divisors is an integer number (8155753165).

Almost surely, 2^16311506329 is an apocalyptic number.

It is an amenable number.

16311506329 is a deficient number, since it is larger than the sum of its proper divisors (1).

16311506329 is an equidigital number, since it uses as much as digits as its factorization.

16311506329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 37.

The spelling of 16311506329 in words is "sixteen billion, three hundred eleven million, five hundred six thousand, three hundred twenty-nine".