211004143031 has 16 divisors (see below), whose sum is σ = 232563784608. Its totient is φ = 189842352000.

The previous prime is 211004142961. The next prime is 211004143061. The reversal of 211004143031 is 130341400112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211004143031 is a prime.

It is a super-2 number, since 2×211004143031² (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 = 211004142994 and 211004143012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211004143061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2668541 + ... + 2746473.

It is an arithmetic number, because the mean of its divisors is an integer number (14535236538).

Almost surely, 2^211004143031 is an apocalyptic number.

211004143031 is a deficient number, since it is larger than the sum of its proper divisors (21559641577).

211004143031 is a wasteful number, since it uses less digits than its factorization.

211004143031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80482.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211004143031 its reverse (130341400112), we get a palindrome (341345543143).

The spelling of 211004143031 in words is "two hundred eleven billion, four million, one hundred forty-three thousand, thirty-one".