102512231 has 2 divisors, whose sum is σ = 102512232. Its totient is φ = 102512230.

The previous prime is 102512209. The next prime is 102512233. The reversal of 102512231 is 132215201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102512231 - 2²² = 98317927 is a prime.

It is a super-2 number, since 2×102512231² = 21017515009194722, which contains 22 as substring.

Together with 102512233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102512233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51256115 + 51256116.

It is an arithmetic number, because the mean of its divisors is an integer number (51256116).

Almost surely, 2^102512231 is an apocalyptic number.

102512231 is a deficient number, since it is larger than the sum of its proper divisors (1).

102512231 is an equidigital number, since it uses as much as digits as its factorization.

102512231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 102512231 is about 10124.8323936745. The cubic root of 102512231 is about 468.0136952064.

Adding to 102512231 its reverse (132215201), we get a palindrome (234727432).

The spelling of 102512231 in words is "one hundred two million, five hundred twelve thousand, two hundred thirty-one".