102531020563603 has 4 divisors (see below), whose sum is σ = 102531266589640. Its totient is φ = 102530774537568.

The previous prime is 102531020563571. The next prime is 102531020563837. The reversal of 102531020563603 is 306365020135201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102531020563603 - 2⁵ = 102531020563571 is a prime.

It is a super-2 number, since 2×102531020563603² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102531020563303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122386833 + ... + 123221746.

It is an arithmetic number, because the mean of its divisors is an integer number (25632816647410).

Almost surely, 2^{102531020563603} is an apocalyptic number.

102531020563603 is a deficient number, since it is larger than the sum of its proper divisors (246026037).

102531020563603 is an equidigital number, since it uses as much as digits as its factorization.

102531020563603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246026036.

The product of its (nonzero) digits is 97200, while the sum is 37.

Adding to 102531020563603 its reverse (306365020135201), we get a palindrome (408896040698804).

The spelling of 102531020563603 in words is "one hundred two trillion, five hundred thirty-one billion, twenty million, five hundred sixty-three thousand, six hundred three".