7131706720 has 48 divisors (see below), whose sum is σ = 17839761408. Its totient is φ = 2684876800.

The previous prime is 7131706711. The next prime is 7131706721. The reversal of 7131706720 is 276071317.

It is a super-2 number, since 2×7131706720² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7131706721) 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, 1308256 + ... + 1313695.

It is an arithmetic number, because the mean of its divisors is an integer number (371661696).

Almost surely, 2^7131706720 is an apocalyptic number.

It is an amenable number.

7131706720 is an abundant number, since it is smaller than the sum of its proper divisors (10708054688).

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

7131706720 is a wasteful number, since it uses less digits than its factorization.

7131706720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621983 (or 2621975 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 34.

The square root of 7131706720 is about 84449.4329169829. The cubic root of 7131706720 is about 1924.8541381581.

The spelling of 7131706720 in words is "seven billion, one hundred thirty-one million, seven hundred six thousand, seven hundred twenty".