102631231 has 2 divisors, whose sum is σ = 102631232. Its totient is φ = 102631230.

The previous prime is 102631187. The next prime is 102631271. The reversal of 102631231 is 132136201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102631231 - 2¹¹ = 102629183 is a prime.

It is a super-2 number, since 2×102631231² = 21066339153150722, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 102631199 and 102631208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102631271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51315615 + 51315616.

It is an arithmetic number, because the mean of its divisors is an integer number (51315616).

Almost surely, 2^102631231 is an apocalyptic number.

102631231 is a deficient number, since it is larger than the sum of its proper divisors (1).

102631231 is an equidigital number, since it uses as much as digits as its factorization.

102631231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 102631231 is about 10130.7073296982. The cubic root of 102631231 is about 468.1947210627.

Adding to 102631231 its reverse (132136201), we get a palindrome (234767432).

The spelling of 102631231 in words is "one hundred two million, six hundred thirty-one thousand, two hundred thirty-one".