210100030031 has 4 divisors (see below), whose sum is σ = 210102193200. Its totient is φ = 210097866864.

The previous prime is 210100030003. The next prime is 210100030069. The reversal of 210100030031 is 130030001012.

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

It is a cyclic number.

It is not a de Polignac number, because 210100030031 - 2⁶ = 210100029967 is a prime.

It is a super-2 number, since 2×210100030031² (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 = 210100029994 and 210100030021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210100036031) 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, 928691 + ... + 1132548.

It is an arithmetic number, because the mean of its divisors is an integer number (52525548300).

Almost surely, 2^210100030031 is an apocalyptic number.

210100030031 is a deficient number, since it is larger than the sum of its proper divisors (2163169).

210100030031 is a wasteful number, since it uses less digits than its factorization.

210100030031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2163168.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 210100030031 its reverse (130030001012), we get a palindrome (340130031043).

The spelling of 210100030031 in words is "two hundred ten billion, one hundred million, thirty thousand, thirty-one".