216034031 has 4 divisors (see below), whose sum is σ = 216086472. Its totient is φ = 215981592.

The previous prime is 216034019. The next prime is 216034037. The reversal of 216034031 is 130430612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216034031 is a prime.

It is a super-2 number, since 2×216034031² = 93341405100217922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216033994 and 216034012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216034037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19460 + ... + 28473.

It is an arithmetic number, because the mean of its divisors is an integer number (54021618).

Almost surely, 2^216034031 is an apocalyptic number.

216034031 is a deficient number, since it is larger than the sum of its proper divisors (52441).

216034031 is an equidigital number, since it uses as much as digits as its factorization.

216034031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52440.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 216034031 is about 14698.0961692323. The cubic root of 216034031 is about 600.0315085305.

Adding to 216034031 its reverse (130430612), we get a palindrome (346464643).

The spelling of 216034031 in words is "two hundred sixteen million, thirty-four thousand, thirty-one".