212471923 has 8 divisors (see below), whose sum is σ = 220187520. Its totient is φ = 204810240.

The previous prime is 212471911. The next prime is 212471939. The reversal of 212471923 is 329174212.

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

It is a cyclic number.

It is not a de Polignac number, because 212471923 - 2¹⁷ = 212340851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212471123) 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, 5368 + ... + 21301.

It is an arithmetic number, because the mean of its divisors is an integer number (27523440).

Almost surely, 2^212471923 is an apocalyptic number.

212471923 is a deficient number, since it is larger than the sum of its proper divisors (7715597).

212471923 is a wasteful number, since it uses less digits than its factorization.

212471923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26957.

The product of its digits is 6048, while the sum is 31.

The square root of 212471923 is about 14576.4166721455. The cubic root of 212471923 is about 596.7153129021.

It can be divided in two parts, 2124 and 71923, that added together give a palindrome (74047).

The spelling of 212471923 in words is "two hundred twelve million, four hundred seventy-one thousand, nine hundred twenty-three".