111303213131 has 64 divisors (see below), whose sum is σ = 133135073280. Its totient is φ = 91963952640.

The previous prime is 111303213121. The next prime is 111303213139. The reversal of 111303213131 is 131312303111.

It is a cyclic number.

It is not a de Polignac number, because 111303213131 - 2⁶ = 111303213067 is a prime.

It is a super-2 number, since 2×111303213131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111303213139) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 128972006 + ... + 128972868.

It is an arithmetic number, because the mean of its divisors is an integer number (2080235520).

Almost surely, 2^111303213131 is an apocalyptic number.

111303213131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111303213131 is a deficient number, since it is larger than the sum of its proper divisors (21831860149).

111303213131 is a wasteful number, since it uses less digits than its factorization.

111303213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 111303213131 its reverse (131312303111), we get a palindrome (242615516242).

The spelling of 111303213131 in words is "one hundred eleven billion, three hundred three million, two hundred thirteen thousand, one hundred thirty-one".