43431421232151 has 6 divisors (see below), whose sum is σ = 62734275113120. Its totient is φ = 28954280821428.

The previous prime is 43431421232053. The next prime is 43431421232161. The reversal of 43431421232151 is 15123212413434.

43431421232151 is a `hidden beast` number, since 4 + 3 + 4 + 314 + 2 + 12 + 321 + 5 + 1 = 666.

It is not a de Polignac number, because 43431421232151 - 2¹³ = 43431421223959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43431421232161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2412856735111 + ... + 2412856735128.

Almost surely, 2^{43431421232151} is an apocalyptic number.

43431421232151 is a deficient number, since it is larger than the sum of its proper divisors (19302853880969).

43431421232151 is a wasteful number, since it uses less digits than its factorization.

43431421232151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4825713470245 (or 4825713470242 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

Adding to 43431421232151 its reverse (15123212413434), we get a palindrome (58554633645585).

The spelling of 43431421232151 in words is "forty-three trillion, four hundred thirty-one billion, four hundred twenty-one million, two hundred thirty-two thousand, one hundred fifty-one".