242431725731653 has 2 divisors, whose sum is σ = 242431725731654. Its totient is φ = 242431725731652.

The previous prime is 242431725731633. The next prime is 242431725731659. The reversal of 242431725731653 is 356137527134242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184572929120644 + 57858796611009 = 13585762^2 + 7606497^2 .

It is a cyclic number.

It is not a de Polignac number, because 242431725731653 - 2²¹ = 242431723634501 is a prime.

It is a super-2 number, since 2×242431725731653² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242431725731594 and 242431725731603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242431725731659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121215862865826 + 121215862865827.

It is an arithmetic number, because the mean of its divisors is an integer number (121215862865827).

Almost surely, 2^{242431725731653} is an apocalyptic number.

It is an amenable number.

242431725731653 is a deficient number, since it is larger than the sum of its proper divisors (1).

242431725731653 is an equidigital number, since it uses as much as digits as its factorization.

242431725731653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25401600, while the sum is 55.

The spelling of 242431725731653 in words is "two hundred forty-two trillion, four hundred thirty-one billion, seven hundred twenty-five million, seven hundred thirty-one thousand, six hundred fifty-three".