102401311 has 4 divisors (see below), whose sum is σ = 105168952. Its totient is φ = 99633672.

The previous prime is 102401309. The next prime is 102401323. The reversal of 102401311 is 113104201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102401311 - 2¹ = 102401309 is a prime.

It is a super-3 number, since 3×102401311³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102401291 and 102401300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102401011) 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, 1383765 + ... + 1383838.

It is an arithmetic number, because the mean of its divisors is an integer number (26292238).

Almost surely, 2^102401311 is an apocalyptic number.

102401311 is a deficient number, since it is larger than the sum of its proper divisors (2767641).

102401311 is an equidigital number, since it uses as much as digits as its factorization.

102401311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767640.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 102401311 is about 10119.3532896129. The cubic root of 102401311 is about 467.8448346614.

Adding to 102401311 its reverse (113104201), we get a palindrome (215505512).

The spelling of 102401311 in words is "one hundred two million, four hundred one thousand, three hundred eleven".