74070431 has 2 divisors, whose sum is σ = 74070432. Its totient is φ = 74070430.

The previous prime is 74070397. The next prime is 74070463. The reversal of 74070431 is 13407047.

It is a strong prime.

It is an emirp because it is prime and its reverse (13407047) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74070431 is a prime.

It is a super-2 number, since 2×74070431² = 10972857497051522, 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 74070431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74073431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37035215 + 37035216.

It is an arithmetic number, because the mean of its divisors is an integer number (37035216).

Almost surely, 2^74070431 is an apocalyptic number.

74070431 is a deficient number, since it is larger than the sum of its proper divisors (1).

74070431 is an equidigital number, since it uses as much as digits as its factorization.

74070431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 74070431 is about 8606.4180121581. The cubic root of 74070431 is about 419.9667982068.

Adding to 74070431 its reverse (13407047), we get a palindrome (87477478).

The spelling of 74070431 in words is "seventy-four million, seventy thousand, four hundred thirty-one".