102011387 has 2 divisors, whose sum is σ = 102011388. Its totient is φ = 102011386.

The previous prime is 102011383. The next prime is 102011411. The reversal of 102011387 is 783110201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102011387 - 2² = 102011383 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102011383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51005693 + 51005694.

It is an arithmetic number, because the mean of its divisors is an integer number (51005694).

Almost surely, 2^102011387 is an apocalyptic number.

102011387 is a deficient number, since it is larger than the sum of its proper divisors (1).

102011387 is an equidigital number, since it uses as much as digits as its factorization.

102011387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 102011387 is about 10100.0686631329. The cubic root of 102011387 is about 467.2502590537.

Adding to 102011387 its reverse (783110201), we get a palindrome (885121588).

The spelling of 102011387 in words is "one hundred two million, eleven thousand, three hundred eighty-seven".