211230992 has 20 divisors (see below), whose sum is σ = 467726016. Its totient is φ = 90527520.

The previous prime is 211230979. The next prime is 211230997. The reversal of 211230992 is 299032112.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (211230997) 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, 942884 + ... + 943107.

Almost surely, 2^211230992 is an apocalyptic number.

It is an amenable number.

211230992 is an abundant number, since it is smaller than the sum of its proper divisors (256495024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211230992 is a wasteful number, since it uses less digits than its factorization.

211230992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886006 (or 1886000 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 211230992 is about 14533.7879439601. The cubic root of 211230992 is about 595.5513492149.

The spelling of 211230992 in words is "two hundred eleven million, two hundred thirty thousand, nine hundred ninety-two".