213723470 has 32 divisors (see below), whose sum is σ = 396446400. Its totient is φ = 82895616.

The previous prime is 213723467. The next prime is 213723479. The reversal of 213723470 is 74327312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213723479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132026 + ... + 133634.

It is an arithmetic number, because the mean of its divisors is an integer number (12388950).

Almost surely, 2^213723470 is an apocalyptic number.

213723470 is a deficient number, since it is larger than the sum of its proper divisors (182722930).

213723470 is a wasteful number, since it uses less digits than its factorization.

213723470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 213723470 is about 14619.2841822026. The cubic root of 213723470 is about 597.8846527932.

It can be divided in two parts, 21372 and 3470, that added together give a palindrome (24842).

The spelling of 213723470 in words is "two hundred thirteen million, seven hundred twenty-three thousand, four hundred seventy".