20231240550431 has 2 divisors, whose sum is σ = 20231240550432. Its totient is φ = 20231240550430.

The previous prime is 20231240550379. The next prime is 20231240550461. The reversal of 20231240550431 is 13405504213202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20231240550431 is a prime.

It is a super-2 number, since 2×20231240550431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20231240550461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115620275215 + 10115620275216.

It is an arithmetic number, because the mean of its divisors is an integer number (10115620275216).

Almost surely, 2^{20231240550431} is an apocalyptic number.

20231240550431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20231240550431 is an equidigital number, since it uses as much as digits as its factorization.

20231240550431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 20231240550431 its reverse (13405504213202), we get a palindrome (33636744763633).

The spelling of 20231240550431 in words is "twenty trillion, two hundred thirty-one billion, two hundred forty million, five hundred fifty thousand, four hundred thirty-one".