2231500131 has 24 divisors (see below), whose sum is σ = 3845671440. Its totient is φ = 1275142176.

The previous prime is 2231500111. The next prime is 2231500133. The reversal of 2231500131 is 1310051322.

2231500131 is a `hidden beast` number, since 2 + 2 + 31 + 500 + 131 = 666.

It is not a de Polignac number, because 2231500131 - 2⁷ = 2231500003 is a prime.

It is a super-3 number, since 3×2231500131³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (2231500133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 842026 + ... + 844671.

It is an arithmetic number, because the mean of its divisors is an integer number (160236310).

Almost surely, 2^2231500131 is an apocalyptic number.

2231500131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2231500131 is a deficient number, since it is larger than the sum of its proper divisors (1614171309).

2231500131 is a wasteful number, since it uses less digits than its factorization.

2231500131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686720 (or 1686707 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 2231500131 is about 47238.7566623001. The cubic root of 2231500131 is about 1306.7694480517.

Adding to 2231500131 its reverse (1310051322), we get a palindrome (3541551453).

The spelling of 2231500131 in words is "two billion, two hundred thirty-one million, five hundred thousand, one hundred thirty-one".