2231532 has 18 divisors (see below), whose sum is σ = 5640908. Its totient is φ = 743832.

The previous prime is 2231519. The next prime is 2231533. The reversal of 2231532 is 2351322.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×2231532³ = 33337314460758602304, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁷ + 2¹⁷ + 3³ + 1 + 5⁵ + 3³ + 2²¹ .

It is not an unprimeable number, because it can be changed into a prime (2231533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30958 + ... + 31029.

2^2231532 is an apocalyptic number.

It is an amenable number.

2231532 is an abundant number, since it is smaller than the sum of its proper divisors (3409376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2231532 is a wasteful number, since it uses less digits than its factorization.

2231532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61997 (or 61992 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 2231532 is about 1493.8313157783. The cubic root of 2231532 is about 130.6775668865.

Adding to 2231532 its reverse (2351322), we get a palindrome (4582854).

The spelling of 2231532 in words is "two million, two hundred thirty-one thousand, five hundred thirty-two".