212503971 has 8 divisors (see below), whose sum is σ = 283545360. Its totient is φ = 141565952.

The previous prime is 212503933. The next prime is 212503981. The reversal of 212503971 is 179305212.

212503971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212503971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212503901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20910 + ... + 29363.

It is an arithmetic number, because the mean of its divisors is an integer number (35443170).

Almost surely, 2^212503971 is an apocalyptic number.

212503971 is a deficient number, since it is larger than the sum of its proper divisors (71041389).

212503971 is a wasteful number, since it uses less digits than its factorization.

212503971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51685.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 212503971 is about 14577.5159406533. The cubic root of 212503971 is about 596.7453130556.

The spelling of 212503971 in words is "two hundred twelve million, five hundred three thousand, nine hundred seventy-one".