623212153 has 4 divisors (see below), whose sum is σ = 624948480. Its totient is φ = 621475828.

The previous prime is 623212147. The next prime is 623212171. The reversal of 623212153 is 351212326.

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: 351212326 = 2 ⋅175606163.

It is a cyclic number.

It is not a de Polignac number, because 623212153 - 2²⁵ = 589657721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623212123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867625 + ... + 868342.

It is an arithmetic number, because the mean of its divisors is an integer number (156237120).

Almost surely, 2^623212153 is an apocalyptic number.

It is an amenable number.

623212153 is a deficient number, since it is larger than the sum of its proper divisors (1736327).

623212153 is a wasteful number, since it uses less digits than its factorization.

623212153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736326.

The product of its digits is 2160, while the sum is 25.

The square root of 623212153 is about 24964.2174521854. The cubic root of 623212153 is about 854.1719479835.

Adding to 623212153 its reverse (351212326), we get a palindrome (974424479).

The spelling of 623212153 in words is "six hundred twenty-three million, two hundred twelve thousand, one hundred fifty-three".