74453131 has 2 divisors, whose sum is σ = 74453132. Its totient is φ = 74453130.

The previous prime is 74453129. The next prime is 74453201. The reversal of 74453131 is 13135447.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74453131 - 2¹ = 74453129 is a prime.

It is a super-2 number, since 2×74453131² = 11086537431406322, which contains 22 as substring.

Together with 74453129, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 74453131.

It is not a weakly prime, because it can be changed into another prime (74453111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37226565 + 37226566.

It is an arithmetic number, because the mean of its divisors is an integer number (37226566).

Almost surely, 2^74453131 is an apocalyptic number.

74453131 is a deficient number, since it is larger than the sum of its proper divisors (1).

74453131 is an equidigital number, since it uses as much as digits as its factorization.

74453131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 74453131 is about 8628.6227753912. The cubic root of 74453131 is about 420.6888375034.

Adding to 74453131 its reverse (13135447), we get a palindrome (87588578).

The spelling of 74453131 in words is "seventy-four million, four hundred fifty-three thousand, one hundred thirty-one".