16393240331 has 16 divisors (see below), whose sum is σ = 17711541120. Its totient is φ = 15083210880.

The previous prime is 16393240327. The next prime is 16393240349. The reversal of 16393240331 is 13304239361.

It is a cyclic number.

It is not a de Polignac number, because 16393240331 - 2² = 16393240327 is a prime.

It is a super-2 number, since 2×16393240331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16393240291 and 16393240300.

It is not an unprimeable number, because it can be changed into a prime (16393240361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9415121 + ... + 9416861.

It is an arithmetic number, because the mean of its divisors is an integer number (1106971320).

Almost surely, 2^16393240331 is an apocalyptic number.

16393240331 is a deficient number, since it is larger than the sum of its proper divisors (1318300789).

16393240331 is a wasteful number, since it uses less digits than its factorization.

16393240331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686.

The product of its (nonzero) digits is 34992, while the sum is 35.

Adding to 16393240331 its reverse (13304239361), we get a palindrome (29697479692).

The spelling of 16393240331 in words is "sixteen billion, three hundred ninety-three million, two hundred forty thousand, three hundred thirty-one".