212794931 has 2 divisors, whose sum is σ = 212794932. Its totient is φ = 212794930.

The previous prime is 212794909. The next prime is 212794937. The reversal of 212794931 is 139497212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212794931 - 2⁶ = 212794867 is a prime.

It is a super-2 number, since 2×212794931² = 90563365318589522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212794937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106397465 + 106397466.

It is an arithmetic number, because the mean of its divisors is an integer number (106397466).

Almost surely, 2^212794931 is an apocalyptic number.

212794931 is a deficient number, since it is larger than the sum of its proper divisors (1).

212794931 is an equidigital number, since it uses as much as digits as its factorization.

212794931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 212794931 is about 14587.4922793467. The cubic root of 212794931 is about 597.0175429996.

The spelling of 212794931 in words is "two hundred twelve million, seven hundred ninety-four thousand, nine hundred thirty-one".