239131473 has 32 divisors (see below), whose sum is σ = 384599040. Its totient is φ = 129107520.

The previous prime is 239131463. The next prime is 239131507. The reversal of 239131473 is 374131932.

It is not a de Polignac number, because 239131473 - 2¹³ = 239123281 is a prime.

It is a super-2 number, since 2×239131473² = 114367722758299458, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (239131423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233703 + ... + 234723.

It is an arithmetic number, because the mean of its divisors is an integer number (12018720).

Almost surely, 2^239131473 is an apocalyptic number.

It is an amenable number.

239131473 is a deficient number, since it is larger than the sum of its proper divisors (145467567).

239131473 is a wasteful number, since it uses less digits than its factorization.

239131473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637.

The product of its digits is 13608, while the sum is 33.

The square root of 239131473 is about 15463.8763898319. The cubic root of 239131473 is about 620.6959519369.

The spelling of 239131473 in words is "two hundred thirty-nine million, one hundred thirty-one thousand, four hundred seventy-three".