11311323331 has 12 divisors (see below), whose sum is σ = 14209266736. Its totient is φ = 8814017520.

The previous prime is 11311323313. The next prime is 11311323343. The reversal of 11311323331 is 13332311311.

It is not a de Polignac number, because 11311323331 - 2⁹ = 11311322819 is a prime.

It is a super-2 number, since 2×11311323331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11311324331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6676440 + ... + 6678133.

Almost surely, 2^11311323331 is an apocalyptic number.

11311323331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11311323331 is a deficient number, since it is larger than the sum of its proper divisors (2897943405).

11311323331 is a wasteful number, since it uses less digits than its factorization.

11311323331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13354602 (or 13354591 counting only the distinct ones).

The product of its digits is 486, while the sum is 22.

Adding to 11311323331 its reverse (13332311311), we get a palindrome (24643634642).

The spelling of 11311323331 in words is "eleven billion, three hundred eleven million, three hundred twenty-three thousand, three hundred thirty-one".