2231203131 has 32 divisors (see below), whose sum is σ = 3620635200. Its totient is φ = 1351687680.

The previous prime is 2231203127. The next prime is 2231203153. The reversal of 2231203131 is 1313021322.

It is not a de Polignac number, because 2231203131 - 2² = 2231203127 is a prime.

It is a super-3 number, since 3×2231203131³ (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 (2231203631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70500 + ... + 97121.

It is an arithmetic number, because the mean of its divisors is an integer number (113144850).

Almost surely, 2^2231203131 is an apocalyptic number.

2231203131 is a deficient number, since it is larger than the sum of its proper divisors (1389432069).

2231203131 is a wasteful number, since it uses less digits than its factorization.

2231203131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167676 (or 167670 counting only the distinct ones).

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

The square root of 2231203131 is about 47235.6129525171. The cubic root of 2231203131 is about 1306.7114709477.

Adding to 2231203131 its reverse (1313021322), we get a palindrome (3544224453).

The spelling of 2231203131 in words is "two billion, two hundred thirty-one million, two hundred three thousand, one hundred thirty-one".