1523020133 has 4 divisors (see below), whose sum is σ = 1523154240. Its totient is φ = 1522886028.

The previous prime is 1523020117. The next prime is 1523020151. The reversal of 1523020133 is 3310203251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3310203251 = 71 ⋅46622581.

It is a cyclic number.

It is not a de Polignac number, because 1523020133 - 2⁴ = 1523020117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1523022133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48263 + ... + 73316.

It is an arithmetic number, because the mean of its divisors is an integer number (380788560).

Almost surely, 2^1523020133 is an apocalyptic number.

It is an amenable number.

1523020133 is a deficient number, since it is larger than the sum of its proper divisors (134107).

1523020133 is a wasteful number, since it uses less digits than its factorization.

1523020133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134106.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1523020133 is about 39025.8905471739. The cubic root of 1523020133 is about 1150.5404222428.

Adding to 1523020133 its reverse (3310203251), we get a palindrome (4833223384).

The spelling of 1523020133 in words is "one billion, five hundred twenty-three million, twenty thousand, one hundred thirty-three".