10011331231 has 4 divisors (see below), whose sum is σ = 10921452264. Its totient is φ = 9101210200.

The previous prime is 10011331219. The next prime is 10011331243. The reversal of 10011331231 is 13213311001.

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

It is an interprime number because it is at equal distance from previous prime (10011331219) and next prime (10011331243).

It is a cyclic number.

It is not a de Polignac number, because 10011331231 - 2²⁹ = 9474460319 is a prime.

It is a super-2 number, since 2×10011331231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011338231) 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, 455060500 + ... + 455060521.

It is an arithmetic number, because the mean of its divisors is an integer number (2730363066).

Almost surely, 2^10011331231 is an apocalyptic number.

10011331231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10011331231 is a deficient number, since it is larger than the sum of its proper divisors (910121033).

10011331231 is an equidigital number, since it uses as much as digits as its factorization.

10011331231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910121032.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 10011331231 its reverse (13213311001), we get a palindrome (23224642232).

The spelling of 10011331231 in words is "ten billion, eleven million, three hundred thirty-one thousand, two hundred thirty-one".