212631093 has 6 divisors (see below), whose sum is σ = 307133814. Its totient is φ = 141754056.

The previous prime is 212631091. The next prime is 212631101. The reversal of 212631093 is 390136212.

212631093 is a `hidden beast` number, since 21 + 2 + 631 + 0 + 9 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 109872324 + 102758769 = 10482^2 + 10137^2 .

It is not a de Polignac number, because 212631093 - 2¹ = 212631091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212631091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11812830 + ... + 11812847.

It is an arithmetic number, because the mean of its divisors is an integer number (51188969).

Almost surely, 2^212631093 is an apocalyptic number.

It is an amenable number.

212631093 is a deficient number, since it is larger than the sum of its proper divisors (94502721).

212631093 is a wasteful number, since it uses less digits than its factorization.

212631093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23625683 (or 23625680 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 212631093 is about 14581.8754966568. The cubic root of 212631093 is about 596.8642823400.

The spelling of 212631093 in words is "two hundred twelve million, six hundred thirty-one thousand, ninety-three".