133451623 has 2 divisors, whose sum is σ = 133451624. Its totient is φ = 133451622.

The previous prime is 133451557. The next prime is 133451627. The reversal of 133451623 is 326154331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133451623 - 2⁹ = 133451111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133451591 and 133451600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133451627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66725811 + 66725812.

It is an arithmetic number, because the mean of its divisors is an integer number (66725812).

Almost surely, 2^133451623 is an apocalyptic number.

133451623 is a deficient number, since it is larger than the sum of its proper divisors (1).

133451623 is an equidigital number, since it uses as much as digits as its factorization.

133451623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 28.

The square root of 133451623 is about 11552.1263410681. The cubic root of 133451623 is about 511.0239877527.

The spelling of 133451623 in words is "one hundred thirty-three million, four hundred fifty-one thousand, six hundred twenty-three".