2231243242357 has 2 divisors, whose sum is σ = 2231243242358. Its totient is φ = 2231243242356.

The previous prime is 2231243242237. The next prime is 2231243242447. The reversal of 2231243242357 is 7532423421322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1691479723761 + 539763518596 = 1300569^2 + 734686^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231243242357 - 2¹¹ = 2231243240309 is a prime.

It is a super-3 number, since 3×2231243242357³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231243243357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115621621178 + 1115621621179.

It is an arithmetic number, because the mean of its divisors is an integer number (1115621621179).

Almost surely, 2^{2231243242357} is an apocalyptic number.

It is an amenable number.

2231243242357 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231243242357 is an equidigital number, since it uses as much as digits as its factorization.

2231243242357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 40.

Adding to 2231243242357 its reverse (7532423421322), we get a palindrome (9763666663679).

The spelling of 2231243242357 in words is "two trillion, two hundred thirty-one billion, two hundred forty-three million, two hundred forty-two thousand, three hundred fifty-seven".