74740031 has 2 divisors, whose sum is σ = 74740032. Its totient is φ = 74740030.

The previous prime is 74740009. The next prime is 74740069. The reversal of 74740031 is 13004747.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74740031 - 2⁶ = 74739967 is a prime.

It is a super-2 number, since 2×74740031² = 11172144467761922, 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 (74740231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37370015 + 37370016.

It is an arithmetic number, because the mean of its divisors is an integer number (37370016).

Almost surely, 2^74740031 is an apocalyptic number.

74740031 is a deficient number, since it is larger than the sum of its proper divisors (1).

74740031 is an equidigital number, since it uses as much as digits as its factorization.

74740031 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 74740031 is about 8645.2316915164. The cubic root of 74740031 is about 421.2285100291.

Adding to 74740031 its reverse (13004747), we get a palindrome (87744778).

The spelling of 74740031 in words is "seventy-four million, seven hundred forty thousand, thirty-one".