210213100031 has 16 divisors (see below), whose sum is σ = 229688206848. Its totient is φ = 190799061600.

The previous prime is 210213099991. The next prime is 210213100037. The reversal of 210213100031 is 130001312012.

It is a cyclic number.

It is not a de Polignac number, because 210213100031 - 2¹⁰ = 210213099007 is a prime.

It is a super-2 number, since 2×210213100031² (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 = 210213099979 and 210213100015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210213100037) 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, 20039870 + ... + 20050356.

It is an arithmetic number, because the mean of its divisors is an integer number (14355512928).

Almost surely, 2^210213100031 is an apocalyptic number.

210213100031 is a deficient number, since it is larger than the sum of its proper divisors (19475106817).

210213100031 is a wasteful number, since it uses less digits than its factorization.

210213100031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13222.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 210213100031 its reverse (130001312012), we get a palindrome (340214412043).

The spelling of 210213100031 in words is "two hundred ten billion, two hundred thirteen million, one hundred thousand, thirty-one".