2531222132 has 12 divisors (see below), whose sum is σ = 4459368900. Its totient is φ = 1257116736.

The previous prime is 2531222129. The next prime is 2531222147. The reversal of 2531222132 is 2312221352.

It can be written as a sum of positive squares in 2 ways, for example, as 1532409316 + 998812816 = 39146^2 + 31604^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2531222098 and 2531222107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2122913 + ... + 2124104.

It is an arithmetic number, because the mean of its divisors is an integer number (371614075).

Almost surely, 2^2531222132 is an apocalyptic number.

It is an amenable number.

2531222132 is a deficient number, since it is larger than the sum of its proper divisors (1928146768).

2531222132 is a wasteful number, since it uses less digits than its factorization.

2531222132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247170 (or 4247168 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 2531222132 is about 50311.2525385723. The cubic root of 2531222132 is about 1362.8354431720.

Adding to 2531222132 its reverse (2312221352), we get a palindrome (4843443484).

The spelling of 2531222132 in words is "two billion, five hundred thirty-one million, two hundred twenty-two thousand, one hundred thirty-two".