203013313040 has 20 divisors (see below), whose sum is σ = 472005953004. Its totient is φ = 81205325184.

The previous prime is 203013313037. The next prime is 203013313079. The reversal of 203013313040 is 40313310302.

It can be written as a sum of positive squares in 2 ways, for example, as 83156103424 + 119857209616 = 288368^2 + 346204^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268833127 + ... + 1268833286.

Almost surely, 2^203013313040 is an apocalyptic number.

203013313040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203013313040 is an abundant number, since it is smaller than the sum of its proper divisors (268992639964).

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

203013313040 is a wasteful number, since it uses less digits than its factorization.

203013313040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537666426 (or 2537666420 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 203013313040 its reverse (40313310302), we get a palindrome (243326623342).

The spelling of 203013313040 in words is "two hundred three billion, thirteen million, three hundred thirteen thousand, forty".