1231431134041 has 8 divisors (see below), whose sum is σ = 1233247468104. Its totient is φ = 1229616111360.

The previous prime is 1231431133973. The next prime is 1231431134099. The reversal of 1231431134041 is 1404311341321.

It can be written as a sum of positive squares in 4 ways, for example, as 710682720400 + 520748413641 = 843020^2 + 721629^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1231431134041 - 2¹³ = 1231431125849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231431134341) 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 7 ways as a sum of consecutive naturals, for example, 1559601 + ... + 2212513.

It is an arithmetic number, because the mean of its divisors is an integer number (154155933513).

Almost surely, 2^{1231431134041} is an apocalyptic number.

It is an amenable number.

1231431134041 is a deficient number, since it is larger than the sum of its proper divisors (1816334063).

1231431134041 is a wasteful number, since it uses less digits than its factorization.

1231431134041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655691.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 1231431134041 its reverse (1404311341321), we get a palindrome (2635742475362).

The spelling of 1231431134041 in words is "one trillion, two hundred thirty-one billion, four hundred thirty-one million, one hundred thirty-four thousand, forty-one".