70304431 has 2 divisors, whose sum is σ = 70304432. Its totient is φ = 70304430.

The previous prime is 70304411. The next prime is 70304449. The reversal of 70304431 is 13440307.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (13440307) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70304431 - 2¹⁹ = 69780143 is a prime.

It is a super-2 number, since 2×70304431² = 9885426036467522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70304411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35152215 + 35152216.

It is an arithmetic number, because the mean of its divisors is an integer number (35152216).

Almost surely, 2^70304431 is an apocalyptic number.

70304431 is a deficient number, since it is larger than the sum of its proper divisors (1).

70304431 is an equidigital number, since it uses as much as digits as its factorization.

70304431 is an evil number, because the sum of its binary digits is even.

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

The square root of 70304431 is about 8384.7737596193. The cubic root of 70304431 is about 412.7251169147.

Adding to 70304431 its reverse (13440307), we get a palindrome (83744738).

The spelling of 70304431 in words is "seventy million, three hundred four thousand, four hundred thirty-one".