111432311437 has 2 divisors, whose sum is σ = 111432311438. Its totient is φ = 111432311436.

The previous prime is 111432311423. The next prime is 111432311453. The reversal of 111432311437 is 734113234111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66598060356 + 44834251081 = 258066^2 + 211741^2 .

It is a cyclic number.

It is not a de Polignac number, because 111432311437 - 2¹⁵ = 111432278669 is a prime.

It is a super-2 number, since 2×111432311437² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111432311399 and 111432311408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111432314437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55716155718 + 55716155719.

It is an arithmetic number, because the mean of its divisors is an integer number (55716155719).

Almost surely, 2^111432311437 is an apocalyptic number.

It is an amenable number.

111432311437 is a deficient number, since it is larger than the sum of its proper divisors (1).

111432311437 is an equidigital number, since it uses as much as digits as its factorization.

111432311437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

Adding to 111432311437 its reverse (734113234111), we get a palindrome (845545545548).

The spelling of 111432311437 in words is "one hundred eleven billion, four hundred thirty-two million, three hundred eleven thousand, four hundred thirty-seven".