1231323032133 has 12 divisors (see below), whose sum is σ = 1780190218560. Its totient is φ = 820137788136.

The previous prime is 1231323032131. The next prime is 1231323032209. The reversal of 1231323032133 is 3312303231321.

1231323032133 is a `hidden beast` number, since 1 + 2 + 313 + 23 + 0 + 321 + 3 + 3 = 666.

It is not a de Polignac number, because 1231323032133 - 2¹ = 1231323032131 is a prime.

It is a super-2 number, since 2×1231323032133² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1231323032097 and 1231323032106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231323032131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62008963 + ... + 62028816.

It is an arithmetic number, because the mean of its divisors is an integer number (148349184880).

Almost surely, 2^{1231323032133} is an apocalyptic number.

It is an amenable number.

1231323032133 is a deficient number, since it is larger than the sum of its proper divisors (548867186427).

1231323032133 is a wasteful number, since it uses less digits than its factorization.

1231323032133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124038888 (or 124038885 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 1231323032133 its reverse (3312303231321), we get a palindrome (4543626263454).

The spelling of 1231323032133 in words is "one trillion, two hundred thirty-one billion, three hundred twenty-three million, thirty-two thousand, one hundred thirty-three".