70434431 has 2 divisors, whose sum is σ = 70434432. Its totient is φ = 70434430.

The previous prime is 70434401. The next prime is 70434437. The reversal of 70434431 is 13443407.

It is a strong prime.

It is an emirp because it is prime and its reverse (13443407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70434431 - 2⁶ = 70434367 is a prime.

It is a super-2 number, since 2×70434431² = 9922018140587522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70434431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70434437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35217215 + 35217216.

It is an arithmetic number, because the mean of its divisors is an integer number (35217216).

Almost surely, 2^70434431 is an apocalyptic number.

70434431 is a deficient number, since it is larger than the sum of its proper divisors (1).

70434431 is an equidigital number, since it uses as much as digits as its factorization.

70434431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 70434431 is about 8392.5223264523. The cubic root of 70434431 is about 412.9793504324.

Adding to 70434431 its reverse (13443407), we get a palindrome (83877838).

The spelling of 70434431 in words is "seventy million, four hundred thirty-four thousand, four hundred thirty-one".