203213040 has 40 divisors (see below), whose sum is σ = 629961168. Its totient is φ = 54190080.

The previous prime is 203213039. The next prime is 203213057. The reversal of 203213040 is 40312302.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423121 + ... + 423600.

Almost surely, 2^203213040 is an apocalyptic number.

203213040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203213040 is an abundant number, since it is smaller than the sum of its proper divisors (426748128).

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

203213040 is a wasteful number, since it uses less digits than its factorization.

203213040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846737 (or 846731 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 203213040 is about 14255.2811266562. The cubic root of 203213040 is about 587.9185874604.

Adding to 203213040 its reverse (40312302), we get a palindrome (243525342).

The spelling of 203213040 in words is "two hundred three million, two hundred thirteen thousand, forty".