133320423251 has 2 divisors, whose sum is σ = 133320423252. Its totient is φ = 133320423250.

The previous prime is 133320423227. The next prime is 133320423317. The reversal of 133320423251 is 152324023331.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (152324023331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133320423251 - 2³⁴ = 116140554067 is a prime.

It is not a weakly prime, because it can be changed into another prime (133320423211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66660211625 + 66660211626.

It is an arithmetic number, because the mean of its divisors is an integer number (66660211626).

Almost surely, 2^133320423251 is an apocalyptic number.

133320423251 is a deficient number, since it is larger than the sum of its proper divisors (1).

133320423251 is an equidigital number, since it uses as much as digits as its factorization.

133320423251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 133320423251 its reverse (152324023331), we get a palindrome (285644446582).

The spelling of 133320423251 in words is "one hundred thirty-three billion, three hundred twenty million, four hundred twenty-three thousand, two hundred fifty-one".