43070431 has 2 divisors, whose sum is σ = 43070432. Its totient is φ = 43070430.

The previous prime is 43070411. The next prime is 43070437. The reversal of 43070431 is 13407034.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43070431 - 2⁷ = 43070303 is a prime.

It is a super-2 number, since 2×43070431² = 3710124053051522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43070437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21535215 + 21535216.

It is an arithmetic number, because the mean of its divisors is an integer number (21535216).

Almost surely, 2^43070431 is an apocalyptic number.

43070431 is a deficient number, since it is larger than the sum of its proper divisors (1).

43070431 is an equidigital number, since it uses as much as digits as its factorization.

43070431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 43070431 is about 6562.8066404550. The cubic root of 43070431 is about 350.5309790873.

Adding to 43070431 its reverse (13407034), we get a palindrome (56477465).

The spelling of 43070431 in words is "forty-three million, seventy thousand, four hundred thirty-one".