731013120 has 224 divisors, whose sum is σ = 2602931040. Its totient is φ = 194641920.

The previous prime is 731013119. The next prime is 731013161. The reversal of 731013120 is 21310137.

It is a super-2 number, since 2×731013120² = 1068760363224268800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 731013093 and 731013102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1105590 + ... + 1106250.

Almost surely, 2^731013120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731013120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1301465520).

731013120 is an abundant number, since it is smaller than the sum of its proper divisors (1871917920).

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

731013120 is an equidigital number, since it uses as much as digits as its factorization.

731013120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 731013120 is about 27037.2542984675. The cubic root of 731013120 is about 900.8276830342.

Adding to 731013120 its reverse (21310137), we get a palindrome (752323257).

The spelling of 731013120 in words is "seven hundred thirty-one million, thirteen thousand, one hundred twenty".