731136132 has 120 divisors (see below), whose sum is σ = 1992957120. Its totient is φ = 233513280.

The previous prime is 731136053. The next prime is 731136137. The reversal of 731136132 is 231631137.

731136132 is a `hidden beast` number, since 7 + 31 + 13 + 613 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 731136096 and 731136105.

It is not an unprimeable number, because it can be changed into a prime (731136137) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 850719 + ... + 851577.

It is an arithmetic number, because the mean of its divisors is an integer number (16607976).

Almost surely, 2^731136132 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 731136132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (996478560).

731136132 is an abundant number, since it is smaller than the sum of its proper divisors (1261820988).

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

731136132 is a wasteful number, since it uses less digits than its factorization.

731136132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 972 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 731136132 is about 27039.5290639464. The cubic root of 731136132 is about 900.8782094415.

Adding to 731136132 its reverse (231631137), we get a palindrome (962767269).

The spelling of 731136132 in words is "seven hundred thirty-one million, one hundred thirty-six thousand, one hundred thirty-two".