1656344152231 has 2 divisors, whose sum is σ = 1656344152232. Its totient is φ = 1656344152230.

The previous prime is 1656344152159. The next prime is 1656344152271. The reversal of 1656344152231 is 1322514436561.

It is a strong prime.

It is an emirp because it is prime and its reverse (1322514436561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1656344152231 - 2²⁹ = 1655807281319 is a prime.

It is a super-2 number, since 2×1656344152231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1656344152271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828172076115 + 828172076116.

It is an arithmetic number, because the mean of its divisors is an integer number (828172076116).

Almost surely, 2^{1656344152231} is an apocalyptic number.

1656344152231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656344152231 is an equidigital number, since it uses as much as digits as its factorization.

1656344152231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 43.

Adding to 1656344152231 its reverse (1322514436561), we get a palindrome (2978858588792).

The spelling of 1656344152231 in words is "one trillion, six hundred fifty-six billion, three hundred forty-four million, one hundred fifty-two thousand, two hundred thirty-one".