102111144631 has 2 divisors, whose sum is σ = 102111144632. Its totient is φ = 102111144630.

The previous prime is 102111144617. The next prime is 102111144677. The reversal of 102111144631 is 136441111201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102111144631 - 2⁵ = 102111144599 is a prime.

It is a super-2 number, since 2×102111144631² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102111144596 and 102111144605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102111144601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51055572315 + 51055572316.

It is an arithmetic number, because the mean of its divisors is an integer number (51055572316).

Almost surely, 2^102111144631 is an apocalyptic number.

102111144631 is a deficient number, since it is larger than the sum of its proper divisors (1).

102111144631 is an equidigital number, since it uses as much as digits as its factorization.

102111144631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

Adding to 102111144631 its reverse (136441111201), we get a palindrome (238552255832).

The spelling of 102111144631 in words is "one hundred two billion, one hundred eleven million, one hundred forty-four thousand, six hundred thirty-one".