111020232131 has 2 divisors, whose sum is σ = 111020232132. Its totient is φ = 111020232130.

The previous prime is 111020232083. The next prime is 111020232149. The reversal of 111020232131 is 131232020111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111020232131 - 2⁶ = 111020232067 is a prime.

It is a super-2 number, since 2×111020232131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111020232161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510116065 + 55510116066.

It is an arithmetic number, because the mean of its divisors is an integer number (55510116066).

Almost surely, 2^111020232131 is an apocalyptic number.

111020232131 is a deficient number, since it is larger than the sum of its proper divisors (1).

111020232131 is an equidigital number, since it uses as much as digits as its factorization.

111020232131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111020232131 its reverse (131232020111), we get a palindrome (242252252242).

The spelling of 111020232131 in words is "one hundred eleven billion, twenty million, two hundred thirty-two thousand, one hundred thirty-one".