2212731631 has 4 divisors (see below), whose sum is σ = 2413889064. Its totient is φ = 2011574200.

The previous prime is 2212731623. The next prime is 2212731641. The reversal of 2212731631 is 1361372122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2212731631 - 2³ = 2212731623 is a prime.

It is a super-2 number, since 2×2212731631² = 9792362541655840322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2212731631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212731641) 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, 100578700 + ... + 100578721.

It is an arithmetic number, because the mean of its divisors is an integer number (603472266).

Almost surely, 2^2212731631 is an apocalyptic number.

2212731631 is a deficient number, since it is larger than the sum of its proper divisors (201157433).

2212731631 is a wasteful number, since it uses less digits than its factorization.

2212731631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201157432.

The product of its digits is 3024, while the sum is 28.

The square root of 2212731631 is about 47039.6814508772. The cubic root of 2212731631 is about 1303.0955090436.

The spelling of 2212731631 in words is "two billion, two hundred twelve million, seven hundred thirty-one thousand, six hundred thirty-one".