212011020031 has 4 divisors (see below), whose sum is σ = 212064957064. Its totient is φ = 211957083000.

The previous prime is 212011020029. The next prime is 212011020047. The reversal of 212011020031 is 130020110212.

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 212011020031 - 2¹ = 212011020029 is a prime.

It is a super-2 number, since 2×212011020031² (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 = 212011019993 and 212011020020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011027031) 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, 26962620 + ... + 26970481.

It is an arithmetic number, because the mean of its divisors is an integer number (53016239266).

Almost surely, 2^212011020031 is an apocalyptic number.

212011020031 is a deficient number, since it is larger than the sum of its proper divisors (53937033).

212011020031 is an equidigital number, since it uses as much as digits as its factorization.

212011020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53937032.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 212011020031 its reverse (130020110212), we get a palindrome (342031130243).

The spelling of 212011020031 in words is "two hundred twelve billion, eleven million, twenty thousand, thirty-one".