20016214531 has 8 divisors (see below), whose sum is σ = 20888787744. Its totient is φ = 19143833280.

The previous prime is 20016214529. The next prime is 20016214541. The reversal of 20016214531 is 13541261002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20016214531 - 2¹ = 20016214529 is a prime.

It is a super-2 number, since 2×20016214531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20016214496 and 20016214505.

It is not an unprimeable number, because it can be changed into a prime (20016214541) 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, 190335 + ... + 276151.

It is an arithmetic number, because the mean of its divisors is an integer number (2611098468).

Almost surely, 2^20016214531 is an apocalyptic number.

20016214531 is a deficient number, since it is larger than the sum of its proper divisors (872573213).

20016214531 is a wasteful number, since it uses less digits than its factorization.

20016214531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95981.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 20016214531 its reverse (13541261002), we get a palindrome (33557475533).

The spelling of 20016214531 in words is "twenty billion, sixteen million, two hundred fourteen thousand, five hundred thirty-one".