2251531132 has 6 divisors (see below), whose sum is σ = 3940179488. Its totient is φ = 1125765564.

The previous prime is 2251531097. The next prime is 2251531133. The reversal of 2251531132 is 2311351522.

2251531132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2251531097 and 2251531106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251531133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281441388 + ... + 281441395.

Almost surely, 2^2251531132 is an apocalyptic number.

It is an amenable number.

2251531132 is a deficient number, since it is larger than the sum of its proper divisors (1688648356).

2251531132 is a wasteful number, since it uses less digits than its factorization.

2251531132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562882787 (or 562882785 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 2251531132 is about 47450.3017061009. The cubic root of 2251531132 is about 1310.6678668184.

Adding to 2251531132 its reverse (2311351522), we get a palindrome (4562882654).

The spelling of 2251531132 in words is "two billion, two hundred fifty-one million, five hundred thirty-one thousand, one hundred thirty-two".