1231022532 has 12 divisors (see below), whose sum is σ = 2872385936. Its totient is φ = 410340840.

The previous prime is 1231022519. The next prime is 1231022539. The reversal of 1231022532 is 2352201321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1231022499 and 1231022508.

It is not an unprimeable number, because it can be changed into a prime (1231022539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51292594 + ... + 51292617.

Almost surely, 2^1231022532 is an apocalyptic number.

1231022532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231022532 is an abundant number, since it is smaller than the sum of its proper divisors (1641363404).

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

1231022532 is a wasteful number, since it uses less digits than its factorization.

1231022532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102585218 (or 102585216 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1231022532 is about 35085.9306845351. The cubic root of 1231022532 is about 1071.7380934113.

Adding to 1231022532 its reverse (2352201321), we get a palindrome (3583223853).

The spelling of 1231022532 in words is "one billion, two hundred thirty-one million, twenty-two thousand, five hundred thirty-two".