1231232013133 has 16 divisors (see below), whose sum is σ = 1263324142080. Its totient is φ = 1199301497856.

The previous prime is 1231232013131. The next prime is 1231232013149. The reversal of 1231232013133 is 3313102321321.

It is a cyclic number.

It is not a de Polignac number, because 1231232013133 - 2¹ = 1231232013131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231232013098 and 1231232013107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231232013131) 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, 24222441 + ... + 24273217.

It is an arithmetic number, because the mean of its divisors is an integer number (78957758880).

Almost surely, 2^{1231232013133} is an apocalyptic number.

It is an amenable number.

1231232013133 is a deficient number, since it is larger than the sum of its proper divisors (32092128947).

1231232013133 is an equidigital number, since it uses as much as digits as its factorization.

1231232013133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52356.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1231232013133 its reverse (3313102321321), we get a palindrome (4544334334454).

The spelling of 1231232013133 in words is "one trillion, two hundred thirty-one billion, two hundred thirty-two million, thirteen thousand, one hundred thirty-three".