2311654623521 has 2 divisors, whose sum is σ = 2311654623522. Its totient is φ = 2311654623520.

The previous prime is 2311654623491. The next prime is 2311654623541. The reversal of 2311654623521 is 1253264561132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1929098766400 + 382555857121 = 1388920^2 + 618511^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311654623521 - 2²² = 2311650429217 is a prime.

It is not a weakly prime, because it can be changed into another prime (2311654623541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155827311760 + 1155827311761.

It is an arithmetic number, because the mean of its divisors is an integer number (1155827311761).

Almost surely, 2^{2311654623521} is an apocalyptic number.

It is an amenable number.

2311654623521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311654623521 is an equidigital number, since it uses as much as digits as its factorization.

2311654623521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 41.

The spelling of 2311654623521 in words is "two trillion, three hundred eleven billion, six hundred fifty-four million, six hundred twenty-three thousand, five hundred twenty-one".