74321147731 has 8 divisors (see below), whose sum is σ = 75930935744. Its totient is φ = 72723985920.

The previous prime is 74321147683. The next prime is 74321147737. The reversal of 74321147731 is 13774112347.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74321147731 - 2³¹ = 72173664083 is a prime.

It is a super-2 number, since 2×74321147731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74321147737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3144651 + ... + 3168196.

It is an arithmetic number, because the mean of its divisors is an integer number (9491366968).

Almost surely, 2^74321147731 is an apocalyptic number.

74321147731 is a deficient number, since it is larger than the sum of its proper divisors (1609788013).

74321147731 is a wasteful number, since it uses less digits than its factorization.

74321147731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6313101.

The product of its digits is 98784, while the sum is 40.

The spelling of 74321147731 in words is "seventy-four billion, three hundred twenty-one million, one hundred forty-seven thousand, seven hundred thirty-one".