243130240153 has 2 divisors, whose sum is σ = 243130240154. Its totient is φ = 243130240152.

The previous prime is 243130240147. The next prime is 243130240181. The reversal of 243130240153 is 351042031342.

It is a happy number.

It is an a-pointer prime, because the next prime (243130240181) can be obtained adding 243130240153 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196934475529 + 46195764624 = 443773^2 + 214932^2 .

It is a cyclic number.

It is not a de Polignac number, because 243130240153 - 2⁵ = 243130240121 is a prime.

It is a super-2 number, since 2×243130240153² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243130240123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121565120076 + 121565120077.

It is an arithmetic number, because the mean of its divisors is an integer number (121565120077).

Almost surely, 2^243130240153 is an apocalyptic number.

It is an amenable number.

243130240153 is a deficient number, since it is larger than the sum of its proper divisors (1).

243130240153 is an equidigital number, since it uses as much as digits as its factorization.

243130240153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 243130240153 its reverse (351042031342), we get a palindrome (594172271495).

The spelling of 243130240153 in words is "two hundred forty-three billion, one hundred thirty million, two hundred forty thousand, one hundred fifty-three".