216424204131 has 8 divisors (see below), whose sum is σ = 288567756880. Its totient is φ = 144281727072.

The previous prime is 216424204127. The next prime is 216424204187. The reversal of 216424204131 is 131402424612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216424204131 - 2² = 216424204127 is a prime.

It is a super-2 number, since 2×216424204131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216424204631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625725 + ... + 907953.

It is an arithmetic number, because the mean of its divisors is an integer number (36070969610).

Almost surely, 2^216424204131 is an apocalyptic number.

216424204131 is a deficient number, since it is larger than the sum of its proper divisors (72143552749).

216424204131 is a wasteful number, since it uses less digits than its factorization.

216424204131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537845.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 216424204131 its reverse (131402424612), we get a palindrome (347826628743).

The spelling of 216424204131 in words is "two hundred sixteen billion, four hundred twenty-four million, two hundred four thousand, one hundred thirty-one".