203143201323400 has 96 divisors (see below), whose sum is σ = 521045160741000. Its totient is φ = 73177288243200.

The previous prime is 203143201323347. The next prime is 203143201323407. The reversal of 203143201323400 is 4323102341302.

It is a happy number.

203143201323400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 35965904076964 + 167177297246436 = 5997158^2 + 12929706^2 .

It is a super-2 number, since 2×203143201323400² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203143201323407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 952722675 + ... + 952935874.

Almost surely, 2^{203143201323400} is an apocalyptic number.

203143201323400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203143201323400 is an abundant number, since it is smaller than the sum of its proper divisors (317901959417600).

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

203143201323400 is a wasteful number, since it uses less digits than its factorization.

203143201323400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905658619 (or 1905658610 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 203143201323400 its reverse (4323102341302), we get a palindrome (207466303664702).

The spelling of 203143201323400 in words is "two hundred three trillion, one hundred forty-three billion, two hundred one million, three hundred twenty-three thousand, four hundred".