111005001631 has 2 divisors, whose sum is σ = 111005001632. Its totient is φ = 111005001630.

The previous prime is 111005001589. The next prime is 111005001659. The reversal of 111005001631 is 136100500111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111005001631 - 2¹³ = 111004993439 is a prime.

It is a super-2 number, since 2×111005001631² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111005001599 and 111005001608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111005001931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55502500815 + 55502500816.

It is an arithmetic number, because the mean of its divisors is an integer number (55502500816).

Almost surely, 2^111005001631 is an apocalyptic number.

111005001631 is a deficient number, since it is larger than the sum of its proper divisors (1).

111005001631 is an equidigital number, since it uses as much as digits as its factorization.

111005001631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 19.

Adding to 111005001631 its reverse (136100500111), we get a palindrome (247105501742).

The spelling of 111005001631 in words is "one hundred eleven billion, five million, one thousand, six hundred thirty-one".