731487427 has 8 divisors (see below), whose sum is σ = 802397232. Its totient is φ = 661312800.

The previous prime is 731487409. The next prime is 731487433. The reversal of 731487427 is 724784137.

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 731487427 - 2¹⁹ = 730963139 is a prime.

It is a super-3 number, since 3×731487427³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (731487467) 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, 181708 + ... + 185689.

It is an arithmetic number, because the mean of its divisors is an integer number (100299654).

Almost surely, 2^731487427 is an apocalyptic number.

731487427 is a deficient number, since it is larger than the sum of its proper divisors (70909805).

731487427 is a wasteful number, since it uses less digits than its factorization.

731487427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367589.

The product of its digits is 263424, while the sum is 43.

The square root of 731487427 is about 27046.0242364751. The cubic root of 731487427 is about 901.0224704639.

The spelling of 731487427 in words is "seven hundred thirty-one million, four hundred eighty-seven thousand, four hundred twenty-seven".