203131111134411 has 12 divisors (see below), whose sum is σ = 293411835943200. Its totient is φ = 135420634154160.

The previous prime is 203131111134353. The next prime is 203131111134433. The reversal of 203131111134411 is 114431111131302.

203131111134411 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 3 + 1 + 111 + 134 + 411 = 666.

It is not a de Polignac number, because 203131111134411 - 2¹³ = 203131111126219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203131111134461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4198665 + ... + 20588613.

It is an arithmetic number, because the mean of its divisors is an integer number (24450986328600).

Almost surely, 2^{203131111134411} is an apocalyptic number.

203131111134411 is a deficient number, since it is larger than the sum of its proper divisors (90280724808789).

203131111134411 is a wasteful number, since it uses less digits than its factorization.

203131111134411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17767026 (or 17767023 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

Adding to 203131111134411 its reverse (114431111131302), we get a palindrome (317562222265713).

The spelling of 203131111134411 in words is "two hundred three trillion, one hundred thirty-one billion, one hundred eleven million, one hundred thirty-four thousand, four hundred eleven".