203454531213 has 8 divisors (see below), whose sum is σ = 271297032288. Its totient is φ = 135624192144.

The previous prime is 203454531197. The next prime is 203454531223. The reversal of 203454531213 is 312135454302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203454531213 - 2⁴ = 203454531197 is a prime.

It is a super-2 number, since 2×203454531213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203454531223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3001395 + ... + 3068432.

It is an arithmetic number, because the mean of its divisors is an integer number (33912129036).

Almost surely, 2^203454531213 is an apocalyptic number.

It is an amenable number.

203454531213 is a deficient number, since it is larger than the sum of its proper divisors (67842501075).

203454531213 is a wasteful number, since it uses less digits than its factorization.

203454531213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6081003.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 203454531213 its reverse (312135454302), we get a palindrome (515589985515).

The spelling of 203454531213 in words is "two hundred three billion, four hundred fifty-four million, five hundred thirty-one thousand, two hundred thirteen".