39012231 has 4 divisors (see below), whose sum is σ = 52016312. Its totient is φ = 26008152.

The previous prime is 39012191. The next prime is 39012247. The reversal of 39012231 is 13221093.

It is a happy number.

39012231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 39012231 - 2¹⁰ = 39011207 is a prime.

It is a super-2 number, since 2×39012231² = 3043908335194722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39012198 and 39012207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39012251) 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 3 ways as a sum of consecutive naturals, for example, 6502036 + ... + 6502041.

It is an arithmetic number, because the mean of its divisors is an integer number (13004078).

Almost surely, 2^39012231 is an apocalyptic number.

39012231 is a deficient number, since it is larger than the sum of its proper divisors (13004081).

39012231 is a wasteful number, since it uses less digits than its factorization.

39012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13004080.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 39012231 is about 6245.9771853570. The cubic root of 39012231 is about 339.1565917987.

It can be divided in two parts, 390 and 12231, that added together give a palindrome (12621).

The spelling of 39012231 in words is "thirty-nine million, twelve thousand, two hundred thirty-one".