1111213311231 has 32 divisors (see below), whose sum is σ = 1501294798080. Its totient is φ = 731027517696.

The previous prime is 1111213311211. The next prime is 1111213311233. The reversal of 1111213311231 is 1321133121111.

It is not a de Polignac number, because 1111213311231 - 2³³ = 1102623376639 is a prime.

It is a super-2 number, since 2×1111213311231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111213311198 and 1111213311207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111213311233) 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, 226360005 + ... + 226364913.

It is an arithmetic number, because the mean of its divisors is an integer number (46915462440).

Almost surely, 2^{1111213311231} is an apocalyptic number.

1111213311231 is a deficient number, since it is larger than the sum of its proper divisors (390081486849).

1111213311231 is a wasteful number, since it uses less digits than its factorization.

1111213311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7623.

The product of its digits is 108, while the sum is 21.

Adding to 1111213311231 its reverse (1321133121111), we get a palindrome (2432346432342).

The spelling of 1111213311231 in words is "one trillion, one hundred eleven billion, two hundred thirteen million, three hundred eleven thousand, two hundred thirty-one".