74312351 has 2 divisors, whose sum is σ = 74312352. Its totient is φ = 74312350.

The previous prime is 74312347. The next prime is 74312383. The reversal of 74312351 is 15321347.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74312351 - 2² = 74312347 is a prime.

It is a super-4 number, since 4×74312351⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

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 74312351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74312551) 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, 37156175 + 37156176.

It is an arithmetic number, because the mean of its divisors is an integer number (37156176).

Almost surely, 2^74312351 is an apocalyptic number.

74312351 is a deficient number, since it is larger than the sum of its proper divisors (1).

74312351 is an equidigital number, since it uses as much as digits as its factorization.

74312351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 74312351 is about 8620.4611825586. The cubic root of 74312351 is about 420.4235164826.

Adding to 74312351 its reverse (15321347), we get a palindrome (89633698).

The spelling of 74312351 in words is "seventy-four million, three hundred twelve thousand, three hundred fifty-one".