211020030031 has 8 divisors (see below), whose sum is σ = 228186866880. Its totient is φ = 194381403648.

The previous prime is 211020030017. The next prime is 211020030043. The reversal of 211020030031 is 130030020112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211020030031 - 2³¹ = 208872546383 is a prime.

It is a super-3 number, since 3×211020030031³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211020029993 and 211020030020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020030631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132051786 + ... + 132053383.

It is an arithmetic number, because the mean of its divisors is an integer number (28523358360).

Almost surely, 2^211020030031 is an apocalyptic number.

211020030031 is a deficient number, since it is larger than the sum of its proper divisors (17166836849).

211020030031 is a wasteful number, since it uses less digits than its factorization.

211020030031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264105233.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 211020030031 its reverse (130030020112), we get a palindrome (341050050143).

The spelling of 211020030031 in words is "two hundred eleven billion, twenty million, thirty thousand, thirty-one".