203131540402 has 16 divisors (see below), whose sum is σ = 348236186112. Its totient is φ = 87053702400.

The previous prime is 203131540309. The next prime is 203131540429. The reversal of 203131540402 is 204045131302.

203131540402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290527 + ... + 700477.

It is an arithmetic number, because the mean of its divisors is an integer number (21764761632).

Almost surely, 2^203131540402 is an apocalyptic number.

203131540402 is a deficient number, since it is larger than the sum of its proper divisors (145104645710).

203131540402 is a wasteful number, since it uses less digits than its factorization.

203131540402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445353.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 203131540402 its reverse (204045131302), we get a palindrome (407176671704).

The spelling of 203131540402 in words is "two hundred three billion, one hundred thirty-one million, five hundred forty thousand, four hundred two".