55315323131 has 2 divisors, whose sum is σ = 55315323132. Its totient is φ = 55315323130.

The previous prime is 55315323103. The next prime is 55315323137. The reversal of 55315323131 is 13132351355.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55315323131 - 2¹⁰ = 55315322107 is a prime.

It is a super-2 number, since 2×55315323131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55315323137) 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, 27657661565 + 27657661566.

It is an arithmetic number, because the mean of its divisors is an integer number (27657661566).

Almost surely, 2^55315323131 is an apocalyptic number.

55315323131 is a deficient number, since it is larger than the sum of its proper divisors (1).

55315323131 is an equidigital number, since it uses as much as digits as its factorization.

55315323131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20250, while the sum is 32.

Adding to 55315323131 its reverse (13132351355), we get a palindrome (68447674486).

The spelling of 55315323131 in words is "fifty-five billion, three hundred fifteen million, three hundred twenty-three thousand, one hundred thirty-one".