203131113140 has 48 divisors (see below), whose sum is σ = 430889158224. Its totient is φ = 80431104000.

The previous prime is 203131113137. The next prime is 203131113149. The reversal of 203131113140 is 41311131302.

It can be written as a sum of positive squares in 8 ways, for example, as 6268522276 + 196862590864 = 79174^2 + 443692^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203131113149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14733050 + ... + 14746830.

It is an arithmetic number, because the mean of its divisors is an integer number (8976857463).

Almost surely, 2^203131113140 is an apocalyptic number.

203131113140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203131113140 is an abundant number, since it is smaller than the sum of its proper divisors (227758045084).

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

203131113140 is a wasteful number, since it uses less digits than its factorization.

203131113140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21188 (or 21186 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 203131113140 its reverse (41311131302), we get a palindrome (244442244442).

The spelling of 203131113140 in words is "two hundred three billion, one hundred thirty-one million, one hundred thirteen thousand, one hundred forty".