203223440531 has 8 divisors (see below), whose sum is σ = 206018566320. Its totient is φ = 200428618752.

The previous prime is 203223440479. The next prime is 203223440557. The reversal of 203223440531 is 135044322302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203223440531 - 2⁶ = 203223440467 is a prime.

It is a super-2 number, since 2×203223440531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203223440494 and 203223440503.

It is not an unprimeable number, because it can be changed into a prime (203223440591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1490540 + ... + 1621158.

It is an arithmetic number, because the mean of its divisors is an integer number (25752320790).

Almost surely, 2^203223440531 is an apocalyptic number.

203223440531 is a deficient number, since it is larger than the sum of its proper divisors (2795125789).

203223440531 is a wasteful number, since it uses less digits than its factorization.

203223440531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152005.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 203223440531 its reverse (135044322302), we get a palindrome (338267762833).

The spelling of 203223440531 in words is "two hundred three billion, two hundred twenty-three million, four hundred forty thousand, five hundred thirty-one".