10243621304531 has 4 divisors (see below), whose sum is σ = 10243689959064. Its totient is φ = 10243552650000.

The previous prime is 10243621304519. The next prime is 10243621304549. The reversal of 10243621304531 is 13540312634201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10243621304531 is a prime.

It is a super-2 number, since 2×10243621304531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10243621304491 and 10243621304500.

It is not an unprimeable number, because it can be changed into a prime (10243621304131) 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, 34102970 + ... + 34402031.

It is an arithmetic number, because the mean of its divisors is an integer number (2560922489766).

Almost surely, 2^{10243621304531} is an apocalyptic number.

10243621304531 is a deficient number, since it is larger than the sum of its proper divisors (68654533).

10243621304531 is an equidigital number, since it uses as much as digits as its factorization.

10243621304531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68654532.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 10243621304531 its reverse (13540312634201), we get a palindrome (23783933938732).

The spelling of 10243621304531 in words is "ten trillion, two hundred forty-three billion, six hundred twenty-one million, three hundred four thousand, five hundred thirty-one".