1200231531150 has 48 divisors (see below), whose sum is σ = 3021000703104. Its totient is φ = 315284698080.

The previous prime is 1200231531139. The next prime is 1200231531151. The reversal of 1200231531150 is 511351320021.

It is a self number, because there is not a number n which added to its sum of digits gives 1200231531150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200231531151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59702962 + ... + 59723061.

It is an arithmetic number, because the mean of its divisors is an integer number (62937514648).

Almost surely, 2^{1200231531150} is an apocalyptic number.

1200231531150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200231531150 is an abundant number, since it is smaller than the sum of its proper divisors (1820769171954).

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

1200231531150 is a wasteful number, since it uses less digits than its factorization.

1200231531150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119426105 (or 119426100 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 1200231531150 its reverse (511351320021), we get a palindrome (1711582851171).

The spelling of 1200231531150 in words is "one trillion, two hundred billion, two hundred thirty-one million, five hundred thirty-one thousand, one hundred fifty".