734331391 has 4 divisors (see below), whose sum is σ = 734805792. Its totient is φ = 733856992.

The previous prime is 734331383. The next prime is 734331407. The reversal of 734331391 is 193133437.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193133437 = 7 ⋅27590491.

It is a cyclic number.

It is not a de Polignac number, because 734331391 - 2³ = 734331383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (734301391) 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 3 ways as a sum of consecutive naturals, for example, 234871 + ... + 237976.

It is an arithmetic number, because the mean of its divisors is an integer number (183701448).

Almost surely, 2^734331391 is an apocalyptic number.

734331391 is a deficient number, since it is larger than the sum of its proper divisors (474401).

734331391 is a wasteful number, since it uses less digits than its factorization.

734331391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474400.

The product of its digits is 20412, while the sum is 34.

The square root of 734331391 is about 27098.5496106341. The cubic root of 734331391 is about 902.1886612645.

The spelling of 734331391 in words is "seven hundred thirty-four million, three hundred thirty-one thousand, three hundred ninety-one".