111213112032031 has 4 divisors (see below), whose sum is σ = 111213362463112. Its totient is φ = 111212861600952.

The previous prime is 111213112032023. The next prime is 111213112032067. The reversal of 111213112032031 is 130230211312111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111213112032031 - 2³ = 111213112032023 is a prime.

It is a super-2 number, since 2×111213112032031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111213112031993 and 111213112032011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111213112032431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124548225 + ... + 125437978.

It is an arithmetic number, because the mean of its divisors is an integer number (27803340615778).

Almost surely, 2^{111213112032031} is an apocalyptic number.

111213112032031 is a deficient number, since it is larger than the sum of its proper divisors (250431081).

111213112032031 is an equidigital number, since it uses as much as digits as its factorization.

111213112032031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250431080.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 111213112032031 its reverse (130230211312111), we get a palindrome (241443323344142).

The spelling of 111213112032031 in words is "one hundred eleven trillion, two hundred thirteen billion, one hundred twelve million, thirty-two thousand, thirty-one".