210012031 has 4 divisors (see below), whose sum is σ = 210215200. Its totient is φ = 209808864.

The previous prime is 210012029. The next prime is 210012041. The reversal of 210012031 is 130210012.

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 210012031 - 2¹ = 210012029 is a prime.

It is a super-2 number, since 2×210012031² = 88210106329489922, 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 = 210011999 and 210012017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210012041) 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, 100026 + ... + 102103.

It is an arithmetic number, because the mean of its divisors is an integer number (52553800).

Almost surely, 2^210012031 is an apocalyptic number.

210012031 is a deficient number, since it is larger than the sum of its proper divisors (203169).

210012031 is a wasteful number, since it uses less digits than its factorization.

210012031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203168.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 210012031 is about 14491.7918491814. The cubic root of 210012031 is about 594.4035460635.

Adding to 210012031 its reverse (130210012), we get a palindrome (340222043).

It can be divided in two parts, 21001 and 2031, that added together give a palindrome (23032).

The spelling of 210012031 in words is "two hundred ten million, twelve thousand, thirty-one".