133223733 has 6 divisors (see below), whose sum is σ = 192434294. Its totient is φ = 88815816.

The previous prime is 133223707. The next prime is 133223737. The reversal of 133223733 is 337322331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 72897444 + 60326289 = 8538^2 + 7767^2 .

It is not a de Polignac number, because 133223733 - 2⁶ = 133223669 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 133223697 and 133223706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133223737) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7401310 + ... + 7401327.

Almost surely, 2^133223733 is an apocalyptic number.

It is an amenable number.

133223733 is a deficient number, since it is larger than the sum of its proper divisors (59210561).

133223733 is a wasteful number, since it uses less digits than its factorization.

133223733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14802643 (or 14802640 counting only the distinct ones).

The product of its digits is 6804, while the sum is 27.

The square root of 133223733 is about 11542.2585744732. The cubic root of 133223733 is about 510.7329369416.

It can be divided in two parts, 133223 and 733, that added together give a square (133956 = 366²).

The spelling of 133223733 in words is "one hundred thirty-three million, two hundred twenty-three thousand, seven hundred thirty-three".