1231120032 has 24 divisors (see below), whose sum is σ = 3231690336. Its totient is φ = 410373312.

The previous prime is 1231120031. The next prime is 1231120061. The reversal of 1231120032 is 2300211321.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 1231119993 and 1231120020.

It is not an unprimeable number, because it can be changed into a prime (1231120031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6411988 + ... + 6412179.

It is an arithmetic number, because the mean of its divisors is an integer number (134653764).

Almost surely, 2^1231120032 is an apocalyptic number.

1231120032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231120032 is an abundant number, since it is smaller than the sum of its proper divisors (2000570304).

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

1231120032 is a wasteful number, since it uses less digits than its factorization.

1231120032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12824180 (or 12824172 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1231120032 is about 35087.3201028520. The cubic root of 1231120032 is about 1071.7663874251.

Adding to 1231120032 its reverse (2300211321), we get a palindrome (3531331353).

The spelling of 1231120032 in words is "one billion, two hundred thirty-one million, one hundred twenty thousand, thirty-two".