203112300440040 has 128 divisors (see below), whose sum is σ = 617762120169600. Its totient is φ = 53416665559040.

The previous prime is 203112300440009. The next prime is 203112300440081. The reversal of 203112300440040 is 40044003211302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12252621 + ... + 23587100.

It is an arithmetic number, because the mean of its divisors is an integer number (4826266563825).

Almost surely, 2^{203112300440040} is an apocalyptic number.

203112300440040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203112300440040 is an abundant number, since it is smaller than the sum of its proper divisors (414649819729560).

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

203112300440040 is a wasteful number, since it uses less digits than its factorization.

203112300440040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35840387 (or 35840383 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 203112300440040 its reverse (40044003211302), we get a palindrome (243156303651342).

The spelling of 203112300440040 in words is "two hundred three trillion, one hundred twelve billion, three hundred million, four hundred forty thousand, forty".