7231051920 has 160 divisors (see below), whose sum is σ = 24172202880. Its totient is φ = 1782190080.

The previous prime is 7231051913. The next prime is 7231051921. The reversal of 7231051920 is 291501327.

It is a super-2 number, since 2×7231051920² (a number of 21 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (7231051921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167622 + ... + 206298.

It is an arithmetic number, because the mean of its divisors is an integer number (151076268).

Almost surely, 2^7231051920 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 7231051920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12086101440).

7231051920 is an abundant number, since it is smaller than the sum of its proper divisors (16941150960).

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

7231051920 is a wasteful number, since it uses less digits than its factorization.

7231051920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38753 (or 38747 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 7231051920 is about 85035.5920776706. The cubic root of 7231051920 is about 1933.7507416887.

The spelling of 7231051920 in words is "seven billion, two hundred thirty-one million, fifty-one thousand, nine hundred twenty".