213091948 has 12 divisors (see below), whose sum is σ = 376332880. Its totient is φ = 105568272.

The previous prime is 213091943. The next prime is 213091951. The reversal of 213091948 is 849190312.

213091948 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213091943) 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, 243936 + ... + 244807.

Almost surely, 2^213091948 is an apocalyptic number.

It is an amenable number.

213091948 is a deficient number, since it is larger than the sum of its proper divisors (163240932).

213091948 is a wasteful number, since it uses less digits than its factorization.

213091948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488856 (or 488854 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 213091948 is about 14597.6692660164. The cubic root of 213091948 is about 597.2951842011.

The spelling of 213091948 in words is "two hundred thirteen million, ninety-one thousand, nine hundred forty-eight".