203542020345 has 16 divisors (see below), whose sum is σ = 334469050560. Its totient is φ = 105621804864.

The previous prime is 203542020317. The next prime is 203542020379. The reversal of 203542020345 is 543020245302.

It is not a de Polignac number, because 203542020345 - 2⁷ = 203542020217 is a prime.

It is a super-2 number, since 2×203542020345² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183370635 + ... + 183371744.

It is an arithmetic number, because the mean of its divisors is an integer number (20904315660).

Almost surely, 2^203542020345 is an apocalyptic number.

It is an amenable number.

203542020345 is a deficient number, since it is larger than the sum of its proper divisors (130927030215).

203542020345 is a wasteful number, since it uses less digits than its factorization.

203542020345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366742424.

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 203542020345 its reverse (543020245302), we get a palindrome (746562265647).

The spelling of 203542020345 in words is "two hundred three billion, five hundred forty-two million, twenty thousand, three hundred forty-five".