1231351225151 has 16 divisors (see below), whose sum is σ = 1277517225600. Its totient is φ = 1185957427200.

The previous prime is 1231351225121. The next prime is 1231351225177. The reversal of 1231351225151 is 1515221531321.

It is a cyclic number.

It is not a de Polignac number, because 1231351225151 - 2⁶ = 1231351225087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231351225121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30818555 + ... + 30858483.

It is an arithmetic number, because the mean of its divisors is an integer number (79844826600).

Almost surely, 2^{1231351225151} is an apocalyptic number.

1231351225151 is a deficient number, since it is larger than the sum of its proper divisors (46166000449).

1231351225151 is an equidigital number, since it uses as much as digits as its factorization.

1231351225151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49570.

The product of its digits is 9000, while the sum is 32.

Adding to 1231351225151 its reverse (1515221531321), we get a palindrome (2746572756472).

The spelling of 1231351225151 in words is "one trillion, two hundred thirty-one billion, three hundred fifty-one million, two hundred twenty-five thousand, one hundred fifty-one".