11313101231 has 32 divisors (see below), whose sum is σ = 12522988800. Its totient is φ = 10207572480.

The previous prime is 11313101213. The next prime is 11313101237. The reversal of 11313101231 is 13210131311.

It is a de Polignac number, because none of the positive numbers 2^k-11313101231 is a prime.

It is a super-2 number, since 2×11313101231² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11313101237) 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, 38611121 + ... + 38611413.

It is an arithmetic number, because the mean of its divisors is an integer number (391343400).

Almost surely, 2^11313101231 is an apocalyptic number.

11313101231 is a deficient number, since it is larger than the sum of its proper divisors (1209887569).

11313101231 is an equidigital number, since it uses as much as digits as its factorization.

11313101231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11313101231 its reverse (13210131311), we get a palindrome (24523232542).

The spelling of 11313101231 in words is "eleven billion, three hundred thirteen million, one hundred one thousand, two hundred thirty-one".