1231131401129 has 8 divisors (see below), whose sum is σ = 1468181546880. Its totient is φ = 1009374813216.

The previous prime is 1231131401081. The next prime is 1231131401153. The reversal of 1231131401129 is 9211041311321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231131401129 - 2¹² = 1231131397033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231131401629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3823389284 + ... + 3823389605.

It is an arithmetic number, because the mean of its divisors is an integer number (183522693360).

Almost surely, 2^{1231131401129} is an apocalyptic number.

It is an amenable number.

1231131401129 is a deficient number, since it is larger than the sum of its proper divisors (237050145751).

1231131401129 is an equidigital number, since it uses as much as digits as its factorization.

1231131401129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7646778919.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 1231131401129 in words is "one trillion, two hundred thirty-one billion, one hundred thirty-one million, four hundred one thousand, one hundred twenty-nine".