212265031 has 4 divisors (see below), whose sum is σ = 231561864. Its totient is φ = 192968200.

The previous prime is 212265013. The next prime is 212265037. The reversal of 212265031 is 130562212.

212265031 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.

It is a cyclic number.

It is not a de Polignac number, because 212265031 - 2⁹ = 212264519 is a prime.

It is a super-2 number, since 2×212265031² = 90112886770861922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212264993 and 212265011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212265037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9648400 + ... + 9648421.

It is an arithmetic number, because the mean of its divisors is an integer number (57890466).

Almost surely, 2^212265031 is an apocalyptic number.

212265031 is a deficient number, since it is larger than the sum of its proper divisors (19296833).

212265031 is a wasteful number, since it uses less digits than its factorization.

212265031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19296832.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 212265031 is about 14569.3181377853. The cubic root of 212265031 is about 596.5215685309.

The spelling of 212265031 in words is "two hundred twelve million, two hundred sixty-five thousand, thirty-one".