1231351225150 has 24 divisors (see below), whose sum is σ = 2296553948640. Its totient is φ = 491198410560.

The previous prime is 1231351225121. The next prime is 1231351225177. The reversal of 1231351225150 is 515221531321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33533455 + ... + 33570154.

It is an arithmetic number, because the mean of its divisors is an integer number (95689747860).

Almost surely, 2^{1231351225150} is an apocalyptic number.

1231351225150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231351225150 is a deficient number, since it is larger than the sum of its proper divisors (1065202723490).

1231351225150 is a wasteful number, since it uses less digits than its factorization.

1231351225150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67103988 (or 67103983 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 1231351225150 its reverse (515221531321), we get a palindrome (1746572756471).

The spelling of 1231351225150 in words is "one trillion, two hundred thirty-one billion, three hundred fifty-one million, two hundred twenty-five thousand, one hundred fifty".