210116646031 has 4 divisors (see below), whose sum is σ = 211034186200. Its totient is φ = 209199105864.

The previous prime is 210116645989. The next prime is 210116646043. The reversal of 210116646031 is 130646611012.

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-210116646031 is a prime.

It is a super-2 number, since 2×210116646031² (a number of 23 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 = 210116645984 and 210116646002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210116646331) 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, 458769741 + ... + 458770198.

It is an arithmetic number, because the mean of its divisors is an integer number (52758546550).

Almost surely, 2^210116646031 is an apocalyptic number.

210116646031 is a deficient number, since it is larger than the sum of its proper divisors (917540169).

210116646031 is an equidigital number, since it uses as much as digits as its factorization.

210116646031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917540168.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 210116646031 in words is "two hundred ten billion, one hundred sixteen million, six hundred forty-six thousand, thirty-one".