211022020031 has 12 divisors (see below), whose sum is σ = 214699899960. Its totient is φ = 207376077600.

The previous prime is 211022020009. The next prime is 211022020067. The reversal of 211022020031 is 130020220112.

It is a happy number.

It is not a de Polignac number, because 211022020031 - 2²² = 211017825727 is a prime.

It is a super-2 number, since 2×211022020031² (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 = 211022019988 and 211022020015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211022020081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54427265 + ... + 54431141.

It is an arithmetic number, because the mean of its divisors is an integer number (17891658330).

Almost surely, 2^211022020031 is an apocalyptic number.

211022020031 is a deficient number, since it is larger than the sum of its proper divisors (3677879929).

211022020031 is an frugal number, since it uses more digits than its factorization.

211022020031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7994 (or 4117 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 211022020031 its reverse (130020220112), we get a palindrome (341042240143).

The spelling of 211022020031 in words is "two hundred eleven billion, twenty-two million, twenty thousand, thirty-one".