1231202023133 has 16 divisors (see below), whose sum is σ = 1307191608000. Its totient is φ = 1157846777472.

The previous prime is 1231202023099. The next prime is 1231202023217. The reversal of 1231202023133 is 3313202021321.

It is a cyclic number.

It is not a de Polignac number, because 1231202023133 - 2²⁸ = 1230933587677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231202023099 and 1231202023108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231202023333) 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, 3386963 + ... + 3732816.

It is an arithmetic number, because the mean of its divisors is an integer number (81699475500).

Almost surely, 2^{1231202023133} is an apocalyptic number.

It is an amenable number.

1231202023133 is a deficient number, since it is larger than the sum of its proper divisors (75989584867).

1231202023133 is an equidigital number, since it uses as much as digits as its factorization.

1231202023133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7119964.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1231202023133 its reverse (3313202021321), we get a palindrome (4544404044454).

The spelling of 1231202023133 in words is "one trillion, two hundred thirty-one billion, two hundred two million, twenty-three thousand, one hundred thirty-three".