30211213031 has 4 divisors (see below), whose sum is σ = 30413973000. Its totient is φ = 30008453064.

The previous prime is 30211213013. The next prime is 30211213037. The reversal of 30211213031 is 13031211203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13031211203 = 163 ⋅79946081.

It is a cyclic number.

It is not a de Polignac number, because 30211213031 - 2¹⁰ = 30211212007 is a prime.

It is a super-2 number, since 2×30211213031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30211213037) 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, 101379761 + ... + 101380058.

It is an arithmetic number, because the mean of its divisors is an integer number (7603493250).

Almost surely, 2^30211213031 is an apocalyptic number.

30211213031 is a deficient number, since it is larger than the sum of its proper divisors (202759969).

30211213031 is a wasteful number, since it uses less digits than its factorization.

30211213031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202759968.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30211213031 its reverse (13031211203), we get a palindrome (43242424234).

The spelling of 30211213031 in words is "thirty billion, two hundred eleven million, two hundred thirteen thousand, thirty-one".