1231238160 has 120 divisors (see below), whose sum is σ = 4268369664. Its totient is φ = 317733120.

The previous prime is 1231238153. The next prime is 1231238189. The reversal of 1231238160 is 618321321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5262 + ... + 49901.

Almost surely, 2^1231238160 is an apocalyptic number.

1231238160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231238160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2134184832).

1231238160 is an abundant number, since it is smaller than the sum of its proper divisors (3037131504).

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

1231238160 is a wasteful number, since it uses less digits than its factorization.

1231238160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55213 (or 55204 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1231238160 is about 35089.0034056255. The cubic root of 1231238160 is about 1071.8006655803.

Adding to 1231238160 its reverse (618321321), we get a palindrome (1849559481).

The spelling of 1231238160 in words is "one billion, two hundred thirty-one million, two hundred thirty-eight thousand, one hundred sixty".