43430431 has 8 divisors (see below), whose sum is σ = 48182400. Its totient is φ = 38812440.

The previous prime is 43430381. The next prime is 43430449. The reversal of 43430431 is 13403434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43430431 - 2¹⁵ = 43397663 is a prime.

It is a super-2 number, since 2×43430431² = 3772404673691522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43433431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32811 + ... + 34108.

It is an arithmetic number, because the mean of its divisors is an integer number (6022800).

Almost surely, 2^43430431 is an apocalyptic number.

43430431 is a deficient number, since it is larger than the sum of its proper divisors (4751969).

43430431 is a wasteful number, since it uses less digits than its factorization.

43430431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66989.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 43430431 is about 6590.1768565039. The cubic root of 43430431 is about 351.5048969828.

Adding to 43430431 its reverse (13403434), we get a palindrome (56833865).

The spelling of 43430431 in words is "forty-three million, four hundred thirty thousand, four hundred thirty-one".