223172307 has 24 divisors (see below), whose sum is σ = 339445680. Its totient is φ = 144829440.

The previous prime is 223172291. The next prime is 223172329. The reversal of 223172307 is 703271322.

It is a happy number.

It is not a de Polignac number, because 223172307 - 2⁴ = 223172291 is a prime.

It is a super-3 number, since 3×223172307³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 (223172357) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 496819 + ... + 497267.

It is an arithmetic number, because the mean of its divisors is an integer number (14143570).

Almost surely, 2^223172307 is an apocalyptic number.

223172307 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

223172307 is a deficient number, since it is larger than the sum of its proper divisors (116273373).

223172307 is an frugal number, since it uses more digits than its factorization.

223172307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 223172307 is about 14938.9526741335. The cubic root of 223172307 is about 606.5688463153.

The spelling of 223172307 in words is "two hundred twenty-three million, one hundred seventy-two thousand, three hundred seven".