103031245645 has 4 divisors (see below), whose sum is σ = 123637494780. Its totient is φ = 82424996512.

The previous prime is 103031245589. The next prime is 103031245649. The reversal of 103031245645 is 546542130301.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50829506116 + 52201739529 = 225454^2 + 228477^2 .

It is a cyclic number.

It is not a de Polignac number, because 103031245645 - 2¹³ = 103031237453 is a prime.

It is a super-3 number, since 3×103031245645³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103031245645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103031245649) 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, 10303124560 + ... + 10303124569.

It is an arithmetic number, because the mean of its divisors is an integer number (30909373695).

Almost surely, 2^103031245645 is an apocalyptic number.

It is an amenable number.

103031245645 is a deficient number, since it is larger than the sum of its proper divisors (20606249135).

103031245645 is an equidigital number, since it uses as much as digits as its factorization.

103031245645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20606249134.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 103031245645 its reverse (546542130301), we get a palindrome (649573375946).

The spelling of 103031245645 in words is "one hundred three billion, thirty-one million, two hundred forty-five thousand, six hundred forty-five".