210031212949 has 2 divisors, whose sum is σ = 210031212950. Its totient is φ = 210031212948.

The previous prime is 210031212947. The next prime is 210031213043. The reversal of 210031212949 is 949212130012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144088568100 + 65942644849 = 379590^2 + 256793^2 .

It is a cyclic number.

It is not a de Polignac number, because 210031212949 - 2¹ = 210031212947 is a prime.

It is a super-2 number, since 2×210031212949² (a number of 23 digits) contains 22 as substring.

Together with 210031212947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210031212943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105015606474 + 105015606475.

It is an arithmetic number, because the mean of its divisors is an integer number (105015606475).

Almost surely, 2^210031212949 is an apocalyptic number.

It is an amenable number.

210031212949 is a deficient number, since it is larger than the sum of its proper divisors (1).

210031212949 is an equidigital number, since it uses as much as digits as its factorization.

210031212949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 210031212949 in words is "two hundred ten billion, thirty-one million, two hundred twelve thousand, nine hundred forty-nine".