10001231331 has 32 divisors (see below), whose sum is σ = 16541564928. Its totient is φ = 5233818240.

The previous prime is 10001231327. The next prime is 10001231351. The reversal of 10001231331 is 13313210001.

It is not a de Polignac number, because 10001231331 - 2² = 10001231327 is a prime.

It is a super-2 number, since 2×10001231331² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10001231331.

It is not an unprimeable number, because it can be changed into a prime (10001231321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109560 + ... + 178901.

It is an arithmetic number, because the mean of its divisors is an integer number (516923904).

Almost surely, 2^10001231331 is an apocalyptic number.

10001231331 is a deficient number, since it is larger than the sum of its proper divisors (6540333597).

10001231331 is a wasteful number, since it uses less digits than its factorization.

10001231331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288611.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 10001231331 its reverse (13313210001), we get a palindrome (23314441332).

The spelling of 10001231331 in words is "ten billion, one million, two hundred thirty-one thousand, three hundred thirty-one".