212831949401 has 4 divisors (see below), whose sum is σ = 213194525712. Its totient is φ = 212469373092.

The previous prime is 212831949397. The next prime is 212831949439. The reversal of 212831949401 is 104949138212.

212831949401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212831949401 - 2² = 212831949397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212831949301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181287275 + ... + 181288448.

It is an arithmetic number, because the mean of its divisors is an integer number (53298631428).

Almost surely, 2^212831949401 is an apocalyptic number.

It is an amenable number.

212831949401 is a deficient number, since it is larger than the sum of its proper divisors (362576311).

212831949401 is an equidigital number, since it uses as much as digits as its factorization.

212831949401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362576310.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 212831949401 in words is "two hundred twelve billion, eight hundred thirty-one million, nine hundred forty-nine thousand, four hundred one".