11345222031 has 64 divisors (see below), whose sum is σ = 18893468160. Its totient is φ = 5952960000.

The previous prime is 11345222023. The next prime is 11345222047. The reversal of 11345222031 is 13022254311.

11345222031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11345222031 - 2³ = 11345222023 is a prime.

It is a super-2 number, since 2×11345222031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11345221992 and 11345222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11345222011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 816361 + ... + 830141.

It is an arithmetic number, because the mean of its divisors is an integer number (295210440).

Almost surely, 2^11345222031 is an apocalyptic number.

11345222031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11345222031 is a deficient number, since it is larger than the sum of its proper divisors (7548246129).

11345222031 is a wasteful number, since it uses less digits than its factorization.

11345222031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13928.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 11345222031 its reverse (13022254311), we get a palindrome (24367476342).

The spelling of 11345222031 in words is "eleven billion, three hundred forty-five million, two hundred twenty-two thousand, thirty-one".