203112201040 has 120 divisors (see below), whose sum is σ = 559700996040. Its totient is φ = 68324465664.

The previous prime is 203112201023. The next prime is 203112201067. The reversal of 203112201040 is 40102211302.

It can be written as a sum of positive squares in 4 ways, for example, as 31802302224 + 171309898816 = 178332^2 + 413896^2 .

It is a super-2 number, since 2×203112201040² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 281055 + ... + 696574.

It is an arithmetic number, because the mean of its divisors is an integer number (4664174967).

Almost surely, 2^203112201040 is an apocalyptic number.

203112201040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203112201040 is an abundant number, since it is smaller than the sum of its proper divisors (356588795000).

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

203112201040 is a wasteful number, since it uses less digits than its factorization.

203112201040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977709 (or 977696 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 203112201040 its reverse (40102211302), we get a palindrome (243214412342).

The spelling of 203112201040 in words is "two hundred three billion, one hundred twelve million, two hundred one thousand, forty".