212523723 has 32 divisors (see below), whose sum is σ = 324000000. Its totient is φ = 137624256.

The previous prime is 212523713. The next prime is 212523739. The reversal of 212523723 is 327325212.

It is a happy number.

It is not a de Polignac number, because 212523723 - 2⁹ = 212523211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (212523713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141028 + ... + 142526.

It is an arithmetic number, because the mean of its divisors is an integer number (10125000).

Almost surely, 2^212523723 is an apocalyptic number.

212523723 is a deficient number, since it is larger than the sum of its proper divisors (111476277).

212523723 is a wasteful number, since it uses less digits than its factorization.

212523723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656 (or 1650 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 212523723 is about 14578.1934065919. The cubic root of 212523723 is about 596.7638014133.

Adding to 212523723 its reverse (327325212), we get a palindrome (539848935).

The spelling of 212523723 in words is "two hundred twelve million, five hundred twenty-three thousand, seven hundred twenty-three".