731368 has 16 divisors (see below), whose sum is σ = 1496160. Its totient is φ = 332400.

The previous prime is 731363. The next prime is 731369. The reversal of 731368 is 863137.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (731363) 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, 4068 + ... + 4243.

It is an arithmetic number, because the mean of its divisors is an integer number (93510).

2⁷³¹³⁶⁸ is an apocalyptic number.

It is an amenable number.

731368 is an abundant number, since it is smaller than the sum of its proper divisors (764792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

731368 is a wasteful number, since it uses less digits than its factorization.

731368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8328 (or 8324 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 731368 is about 855.2005612720. The cubic root of 731368 is about 90.0973432361.

Subtracting 731368 from its reverse (863137), we obtain a square (131769 = 363²).

It can be divided in two parts, 7313 and 68, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 731368 in words is "seven hundred thirty-one thousand, three hundred sixty-eight".