74031313 has 2 divisors, whose sum is σ = 74031314. Its totient is φ = 74031312.

The previous prime is 74031299. The next prime is 74031329. The reversal of 74031313 is 31313047.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73822464 + 208849 = 8592^2 + 457^2 .

It is an emirp because it is prime and its reverse (31313047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74031313 - 2¹³ = 74023121 is a prime.

It is not a weakly prime, because it can be changed into another prime (74031343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37015656 + 37015657.

It is an arithmetic number, because the mean of its divisors is an integer number (37015657).

Almost surely, 2^74031313 is an apocalyptic number.

It is an amenable number.

74031313 is a deficient number, since it is larger than the sum of its proper divisors (1).

74031313 is an equidigital number, since it uses as much as digits as its factorization.

74031313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 74031313 is about 8604.1451057034. The cubic root of 74031313 is about 419.8928543768.

The spelling of 74031313 in words is "seventy-four million, thirty-one thousand, three hundred thirteen".