1655000111431 has 2 divisors, whose sum is σ = 1655000111432. Its totient is φ = 1655000111430.

The previous prime is 1655000111371. The next prime is 1655000111459. The reversal of 1655000111431 is 1341110005561.

It is an a-pointer prime, because the next prime (1655000111459) can be obtained adding 1655000111431 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1655000111431 - 2²¹ = 1654998014279 is a prime.

It is a super-2 number, since 2×1655000111431² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1655000111431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1655000117431) 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, 827500055715 + 827500055716.

It is an arithmetic number, because the mean of its divisors is an integer number (827500055716).

Almost surely, 2^{1655000111431} is an apocalyptic number.

1655000111431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655000111431 is an equidigital number, since it uses as much as digits as its factorization.

1655000111431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 28.

Adding to 1655000111431 its reverse (1341110005561), we get a palindrome (2996110116992).

The spelling of 1655000111431 in words is "one trillion, six hundred fifty-five billion, one hundred eleven thousand, four hundred thirty-one".