103111311 has 16 divisors (see below), whose sum is σ = 138991104. Its totient is φ = 67990944.

The previous prime is 103111303. The next prime is 103111313. The reversal of 103111311 is 113111301.

It is not a de Polignac number, because 103111311 - 2³ = 103111303 is a prime.

It is a super-2 number, since 2×103111311² = 21263884912277442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103111313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138406 + ... + 139148.

It is an arithmetic number, because the mean of its divisors is an integer number (8686944).

Almost surely, 2^103111311 is an apocalyptic number.

103111311 is a deficient number, since it is larger than the sum of its proper divisors (35879793).

103111311 is a wasteful number, since it uses less digits than its factorization.

103111311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 103111311 is about 10154.3739836585. The cubic root of 103111311 is about 468.9236134144.

Adding to 103111311 its reverse (113111301), we get a palindrome (216222612).

The spelling of 103111311 in words is "one hundred three million, one hundred eleven thousand, three hundred eleven".