1231413123133 has 4 divisors (see below), whose sum is σ = 1296224340160. Its totient is φ = 1166601906108.

The previous prime is 1231413123091. The next prime is 1231413123167. The reversal of 1231413123133 is 3313213141321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1231413123133 - 2³³ = 1222823188541 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 (1231413123533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32405608485 + ... + 32405608522.

It is an arithmetic number, because the mean of its divisors is an integer number (324056085040).

Almost surely, 2^{1231413123133} is an apocalyptic number.

It is an amenable number.

1231413123133 is a deficient number, since it is larger than the sum of its proper divisors (64811217027).

1231413123133 is an equidigital number, since it uses as much as digits as its factorization.

1231413123133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64811217026.

The product of its digits is 3888, while the sum is 28.

Adding to 1231413123133 its reverse (3313213141321), we get a palindrome (4544626264454).

The spelling of 1231413123133 in words is "one trillion, two hundred thirty-one billion, four hundred thirteen million, one hundred twenty-three thousand, one hundred thirty-three".