203111430140 has 12 divisors (see below), whose sum is σ = 426534003336. Its totient is φ = 81244572048.

The previous prime is 203111430103. The next prime is 203111430157. The reversal of 203111430140 is 41034111302.

It is a super-2 number, since 2×203111430140² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 10155571507 = 203111430140 / (2 + 0 + 3 + 1 + 1 + 1 + 4 + 3 + 0 + 1 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5077785734 + ... + 5077785773.

It is an arithmetic number, because the mean of its divisors is an integer number (35544500278).

Almost surely, 2^203111430140 is an apocalyptic number.

203111430140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203111430140 is an abundant number, since it is smaller than the sum of its proper divisors (223422573196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203111430140 is a wasteful number, since it uses less digits than its factorization.

203111430140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10155571516 (or 10155571514 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 203111430140 its reverse (41034111302), we get a palindrome (244145541442).

The spelling of 203111430140 in words is "two hundred three billion, one hundred eleven million, four hundred thirty thousand, one hundred forty".