213203012031 has 10 divisors (see below), whose sum is σ = 318488450192. Its totient is φ = 142135341300.

The previous prime is 213203012017. The next prime is 213203012051. The reversal of 213203012031 is 130210302312.

213203012031 is a `hidden beast` number, since 21 + 320 + 301 + 20 + 3 + 1 = 666.

It is not a de Polignac number, because 213203012031 - 2¹⁵ = 213202979263 is a prime.

It is a super-2 number, since 2×213203012031² (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 = 213203011995 and 213203012013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213203012051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1316067895 + ... + 1316068056.

Almost surely, 2^213203012031 is an apocalyptic number.

213203012031 is a deficient number, since it is larger than the sum of its proper divisors (105285438161).

213203012031 is an equidigital number, since it uses as much as digits as its factorization.

213203012031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632135963 (or 2632135954 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 213203012031 its reverse (130210302312), we get a palindrome (343413314343).

The spelling of 213203012031 in words is "two hundred thirteen billion, two hundred three million, twelve thousand, thirty-one".