10020503531 has 8 divisors (see below), whose sum is σ = 10061676240. Its totient is φ = 9979367328.

The previous prime is 10020503513. The next prime is 10020503533. The reversal of 10020503531 is 13530502001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10020503531 is a prime.

It is a super-2 number, since 2×10020503531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10020503533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631760 + ... + 647426.

It is an arithmetic number, because the mean of its divisors is an integer number (1257709530).

Almost surely, 2^10020503531 is an apocalyptic number.

10020503531 is a deficient number, since it is larger than the sum of its proper divisors (41172709).

10020503531 is a wasteful number, since it uses less digits than its factorization.

10020503531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18253.

The product of its (nonzero) digits is 450, while the sum is 20.

The spelling of 10020503531 in words is "ten billion, twenty million, five hundred three thousand, five hundred thirty-one".