55011100031 has 2 divisors, whose sum is σ = 55011100032. Its totient is φ = 55011100030.

The previous prime is 55011100009. The next prime is 55011100069. The reversal of 55011100031 is 13000111055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55011100031 - 2⁶ = 55011099967 is a prime.

It is a super-2 number, since 2×55011100031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55011099982 and 55011100009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55011100091) 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, 27505550015 + 27505550016.

It is an arithmetic number, because the mean of its divisors is an integer number (27505550016).

Almost surely, 2^55011100031 is an apocalyptic number.

55011100031 is a deficient number, since it is larger than the sum of its proper divisors (1).

55011100031 is an equidigital number, since it uses as much as digits as its factorization.

55011100031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75, while the sum is 17.

Adding to 55011100031 its reverse (13000111055), we get a palindrome (68011211086).

The spelling of 55011100031 in words is "fifty-five billion, eleven million, one hundred thousand, thirty-one".