730431337 has 4 divisors (see below), whose sum is σ = 731127376. Its totient is φ = 729735300.

The previous prime is 730431329. The next prime is 730431341. The reversal of 730431337 is 733134037.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 733134037 = 173 ⋅4237769.

It is a cyclic number.

It is not a de Polignac number, because 730431337 - 2³ = 730431329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 730431299 and 730431308.

It is not an unprimeable number, because it can be changed into a prime (730431397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346443 + ... + 348544.

It is an arithmetic number, because the mean of its divisors is an integer number (182781844).

Almost surely, 2^730431337 is an apocalyptic number.

It is an amenable number.

730431337 is a deficient number, since it is larger than the sum of its proper divisors (696039).

730431337 is a wasteful number, since it uses less digits than its factorization.

730431337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696038.

The product of its (nonzero) digits is 15876, while the sum is 31.

The square root of 730431337 is about 27026.4932427424. The cubic root of 730431337 is about 900.5886424881.

The spelling of 730431337 in words is "seven hundred thirty million, four hundred thirty-one thousand, three hundred thirty-seven".