2231320131 has 12 divisors (see below), whose sum is σ = 3226349880. Its totient is φ = 1486008960.

The previous prime is 2231320123. The next prime is 2231320151. The reversal of 2231320131 is 1310231322.

It is not a de Polignac number, because 2231320131 - 2³ = 2231320123 is a prime.

It is a super-3 number, since 3×2231320131³ (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 (2231320151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118926 + ... + 136403.

It is an arithmetic number, because the mean of its divisors is an integer number (268862490).

Almost surely, 2^2231320131 is an apocalyptic number.

2231320131 is a deficient number, since it is larger than the sum of its proper divisors (995029749).

2231320131 is a wasteful number, since it uses less digits than its factorization.

2231320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256306 (or 256303 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2231320131 is about 47236.8514086195. The cubic root of 2231320131 is about 1306.7343110270.

Adding to 2231320131 its reverse (1310231322), we get a palindrome (3541551453).

The spelling of 2231320131 in words is "two billion, two hundred thirty-one million, three hundred twenty thousand, one hundred thirty-one".