203234234531 has 4 divisors (see below), whose sum is σ = 203235895200. Its totient is φ = 203232573864.

The previous prime is 203234234527. The next prime is 203234234563. The reversal of 203234234531 is 135432432302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 203234234531 - 2² = 203234234527 is a prime.

It is a super-2 number, since 2×203234234531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203234234431) 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, 630776 + ... + 896853.

It is an arithmetic number, because the mean of its divisors is an integer number (50808973800).

Almost surely, 2^203234234531 is an apocalyptic number.

203234234531 is a deficient number, since it is larger than the sum of its proper divisors (1660669).

203234234531 is a wasteful number, since it uses less digits than its factorization.

203234234531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660668.

The product of its (nonzero) digits is 51840, while the sum is 32.

Adding to 203234234531 its reverse (135432432302), we get a palindrome (338666666833).

The spelling of 203234234531 in words is "two hundred three billion, two hundred thirty-four million, two hundred thirty-four thousand, five hundred thirty-one".