731343630 has 64 divisors (see below), whose sum is σ = 1907251200. Its totient is φ = 178796160.

The previous prime is 731343629. The next prime is 731343631. The reversal of 731343630 is 36343137.

It is an interprime number because it is at equal distance from previous prime (731343629) and next prime (731343631).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731343631) 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 31 ways as a sum of consecutive naturals, for example, 3025 + ... + 38364.

It is an arithmetic number, because the mean of its divisors is an integer number (29800800).

Almost surely, 2^731343630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731343630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (953625600).

731343630 is an abundant number, since it is smaller than the sum of its proper divisors (1175907570).

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

731343630 is a wasteful number, since it uses less digits than its factorization.

731343630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41449.

The product of its (nonzero) digits is 13608, while the sum is 30.

The square root of 731343630 is about 27043.3657298791. The cubic root of 731343630 is about 900.9634251022.

Adding to 731343630 its reverse (36343137), we get a palindrome (767686767).

The spelling of 731343630 in words is "seven hundred thirty-one million, three hundred forty-three thousand, six hundred thirty".