11312111101231 has 8 divisors (see below), whose sum is σ = 11412554648544. Its totient is φ = 11211673455360.

The previous prime is 11312111101223. The next prime is 11312111101261. The reversal of 11312111101231 is 13210111121311.

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

It is a cyclic number.

It is not a de Polignac number, because 11312111101231 - 2³ = 11312111101223 is a prime.

It is a super-2 number, since 2×11312111101231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11312111101199 and 11312111101208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312111101201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2420811 + ... + 5337091.

It is an arithmetic number, because the mean of its divisors is an integer number (1426569331068).

Almost surely, 2^{11312111101231} is an apocalyptic number.

11312111101231 is a deficient number, since it is larger than the sum of its proper divisors (100443547313).

11312111101231 is a wasteful number, since it uses less digits than its factorization.

11312111101231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950721.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 11312111101231 its reverse (13210111121311), we get a palindrome (24522222222542).

The spelling of 11312111101231 in words is "eleven trillion, three hundred twelve billion, one hundred eleven million, one hundred one thousand, two hundred thirty-one".