203431144330 has 16 divisors (see below), whose sum is σ = 366184564200. Its totient is φ = 81370567872.

The previous prime is 203431144297. The next prime is 203431144331. The reversal of 203431144330 is 33441134302.

It can be written as a sum of positive squares in 4 ways, for example, as 115212046041 + 88219098289 = 339429^2 + 297017^2 .

It is a super-2 number, since 2×203431144330² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203431144331) 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, 266896 + ... + 691444.

Almost surely, 2^203431144330 is an apocalyptic number.

203431144330 is a deficient number, since it is larger than the sum of its proper divisors (162753419870).

203431144330 is a wasteful number, since it uses less digits than its factorization.

203431144330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472473.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 203431144330 its reverse (33441134302), we get a palindrome (236872278632).

The spelling of 203431144330 in words is "two hundred three billion, four hundred thirty-one million, one hundred forty-four thousand, three hundred thirty".