1231210152 has 32 divisors (see below), whose sum is σ = 3420028800. Its totient is φ = 410403312.

The previous prime is 1231210147. The next prime is 1231210163. The reversal of 1231210152 is 2510121321.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2849808 + ... + 2850239.

It is an arithmetic number, because the mean of its divisors is an integer number (106875900).

Almost surely, 2^1231210152 is an apocalyptic number.

1231210152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231210152 is an abundant number, since it is smaller than the sum of its proper divisors (2188818648).

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

1231210152 is a wasteful number, since it uses less digits than its factorization.

1231210152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700062 (or 5700052 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1231210152 is about 35088.6043039617. The cubic root of 1231210152 is about 1071.7925384712.

Adding to 1231210152 its reverse (2510121321), we get a palindrome (3741331473).

The spelling of 1231210152 in words is "one billion, two hundred thirty-one million, two hundred ten thousand, one hundred fifty-two".