74743031 has 24 divisors (see below), whose sum is σ = 86873472. Its totient is φ = 64130000.

The previous prime is 74743013. The next prime is 74743043. The reversal of 74743031 is 13034747.

It is not a de Polignac number, because 74743031 - 2¹⁰ = 74742007 is a prime.

It is a super-2 number, since 2×74743031² = 11173041366133922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74742985 and 74743003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74743051) 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 in 23 ways as a sum of consecutive naturals, for example, 297656 + ... + 297906.

It is an arithmetic number, because the mean of its divisors is an integer number (3619728).

Almost surely, 2^74743031 is an apocalyptic number.

74743031 is a deficient number, since it is larger than the sum of its proper divisors (12130441).

74743031 is a wasteful number, since it uses less digits than its factorization.

74743031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 74743031 is about 8645.4051958251. The cubic root of 74743031 is about 421.2341458693.

Adding to 74743031 its reverse (13034747), we get a palindrome (87777778).

The spelling of 74743031 in words is "seventy-four million, seven hundred forty-three thousand, thirty-one".