203131123201234 has 4 divisors (see below), whose sum is σ = 304696684801854. Its totient is φ = 101565561600616.

The previous prime is 203131123201121. The next prime is 203131123201261. The reversal of 203131123201234 is 432102321131302.

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

It can be written as a sum of positive squares in only one way, i.e., 137991938518009 + 65139184683225 = 11746997^2 + 8070885^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50782780800307 + ... + 50782780800310.

Almost surely, 2^{203131123201234} is an apocalyptic number.

203131123201234 is a deficient number, since it is larger than the sum of its proper divisors (101565561600620).

203131123201234 is a wasteful number, since it uses less digits than its factorization.

203131123201234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101565561600619.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 203131123201234 its reverse (432102321131302), we get a palindrome (635233444332536).

The spelling of 203131123201234 in words is "two hundred three trillion, one hundred thirty-one billion, one hundred twenty-three million, two hundred one thousand, two hundred thirty-four".