102242135531 has 2 divisors, whose sum is σ = 102242135532. Its totient is φ = 102242135530.

The previous prime is 102242135453. The next prime is 102242135581. The reversal of 102242135531 is 135531242201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102242135531 - 2¹⁸ = 102241873387 is a prime.

It is a super-2 number, since 2×102242135531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102242135494 and 102242135503.

It is not a weakly prime, because it can be changed into another prime (102242135581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51121067765 + 51121067766.

It is an arithmetic number, because the mean of its divisors is an integer number (51121067766).

Almost surely, 2^102242135531 is an apocalyptic number.

102242135531 is a deficient number, since it is larger than the sum of its proper divisors (1).

102242135531 is an equidigital number, since it uses as much as digits as its factorization.

102242135531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 102242135531 its reverse (135531242201), we get a palindrome (237773377732).

The spelling of 102242135531 in words is "one hundred two billion, two hundred forty-two million, one hundred thirty-five thousand, five hundred thirty-one".