70016431 has 2 divisors, whose sum is σ = 70016432. Its totient is φ = 70016430.

The previous prime is 70016377. The next prime is 70016449. The reversal of 70016431 is 13461007.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70016431 - 2¹¹ = 70014383 is a prime.

It is a super-2 number, since 2×70016431² = 9804601219955522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70016461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35008215 + 35008216.

It is an arithmetic number, because the mean of its divisors is an integer number (35008216).

Almost surely, 2^70016431 is an apocalyptic number.

70016431 is a deficient number, since it is larger than the sum of its proper divisors (1).

70016431 is an equidigital number, since it uses as much as digits as its factorization.

70016431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 70016431 is about 8367.5821477892. The cubic root of 70016431 is about 412.1607735719.

Adding to 70016431 its reverse (13461007), we get a palindrome (83477438).

The spelling of 70016431 in words is "seventy million, sixteen thousand, four hundred thirty-one".