10321253531 has 4 divisors (see below), whose sum is σ = 10572991464. Its totient is φ = 10069515600.

The previous prime is 10321253513. The next prime is 10321253543. The reversal of 10321253531 is 13535212301.

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-10321253531 is a prime.

It is a super-2 number, since 2×10321253531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10321253531.

It is not an unprimeable number, because it can be changed into a prime (10321253581) 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, 125868905 + ... + 125868986.

It is an arithmetic number, because the mean of its divisors is an integer number (2643247866).

Almost surely, 2^10321253531 is an apocalyptic number.

10321253531 is a deficient number, since it is larger than the sum of its proper divisors (251737933).

10321253531 is an equidigital number, since it uses as much as digits as its factorization.

10321253531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251737932.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 10321253531 its reverse (13535212301), we get a palindrome (23856465832).

The spelling of 10321253531 in words is "ten billion, three hundred twenty-one million, two hundred fifty-three thousand, five hundred thirty-one".