153434623 has 4 divisors (see below), whose sum is σ = 155724760. Its totient is φ = 151144488.

The previous prime is 153434579. The next prime is 153434647. The reversal of 153434623 is 326434351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326434351 = 347 ⋅940733.

It is a cyclic number.

It is not a de Polignac number, because 153434623 - 2²⁵ = 119880191 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153434653) 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, 1144968 + ... + 1145101.

It is an arithmetic number, because the mean of its divisors is an integer number (38931190).

Almost surely, 2^153434623 is an apocalyptic number.

153434623 is a deficient number, since it is larger than the sum of its proper divisors (2290137).

153434623 is an equidigital number, since it uses as much as digits as its factorization.

153434623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290136.

The product of its digits is 25920, while the sum is 31.

The square root of 153434623 is about 12386.8730113778. The cubic root of 153434623 is about 535.3540882443.

Adding to 153434623 its reverse (326434351), we get a palindrome (479868974).

The spelling of 153434623 in words is "one hundred fifty-three million, four hundred thirty-four thousand, six hundred twenty-three".