102040244431 has 2 divisors, whose sum is σ = 102040244432. Its totient is φ = 102040244430.

The previous prime is 102040244419. The next prime is 102040244461. The reversal of 102040244431 is 134442040201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102040244431 - 2¹³ = 102040236239 is a prime.

It is a super-2 number, since 2×102040244431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102040244396 and 102040244405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102040244461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51020122215 + 51020122216.

It is an arithmetic number, because the mean of its divisors is an integer number (51020122216).

Almost surely, 2^102040244431 is an apocalyptic number.

102040244431 is a deficient number, since it is larger than the sum of its proper divisors (1).

102040244431 is an equidigital number, since it uses as much as digits as its factorization.

102040244431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 102040244431 its reverse (134442040201), we get a palindrome (236482284632).

The spelling of 102040244431 in words is "one hundred two billion, forty million, two hundred forty-four thousand, four hundred thirty-one".