212907903 has 8 divisors (see below), whose sum is σ = 305713968. Its totient is φ = 131020224.

The previous prime is 212907889. The next prime is 212907971. The reversal of 212907903 is 309709212.

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

It is not a de Polignac number, because 212907903 - 2⁴ = 212907887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212907973) 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, 2729550 + ... + 2729627.

It is an arithmetic number, because the mean of its divisors is an integer number (38214246).

Almost surely, 2^212907903 is an apocalyptic number.

212907903 is a deficient number, since it is larger than the sum of its proper divisors (92806065).

212907903 is a wasteful number, since it uses less digits than its factorization.

212907903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459193.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 212907903 is about 14591.3639869616. The cubic root of 212907903 is about 597.1231757378.

The spelling of 212907903 in words is "two hundred twelve million, nine hundred seven thousand, nine hundred three".