102011311 has 4 divisors (see below), whose sum is σ = 103063072. Its totient is φ = 100959552.

The previous prime is 102011269. The next prime is 102011317. The reversal of 102011311 is 113110201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113110201 = 607 ⋅186343.

It is a cyclic number.

It is not a de Polignac number, because 102011311 - 2¹⁵ = 101978543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525735 + ... + 525928.

It is an arithmetic number, because the mean of its divisors is an integer number (25765768).

Almost surely, 2^102011311 is an apocalyptic number.

102011311 is a deficient number, since it is larger than the sum of its proper divisors (1051761).

102011311 is an equidigital number, since it uses as much as digits as its factorization.

102011311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051760.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 102011311 is about 10100.0649007816. The cubic root of 102011311 is about 467.2501430175.

Adding to 102011311 its reverse (113110201), we get a palindrome (215121512).

The spelling of 102011311 in words is "one hundred two million, eleven thousand, three hundred eleven".