103431311 has 4 divisors (see below), whose sum is σ = 103527552. Its totient is φ = 103335072.

The previous prime is 103431257. The next prime is 103431319. The reversal of 103431311 is 113134301.

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 103431311 - 2¹⁸ = 103169167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103431311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103431319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46490 + ... + 48663.

It is an arithmetic number, because the mean of its divisors is an integer number (25881888).

Almost surely, 2^103431311 is an apocalyptic number.

103431311 is a deficient number, since it is larger than the sum of its proper divisors (96241).

103431311 is an equidigital number, since it uses as much as digits as its factorization.

103431311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96240.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 103431311 is about 10170.1185342158. The cubic root of 103431311 is about 469.4082049118.

Adding to 103431311 its reverse (113134301), we get a palindrome (216565612).

The spelling of 103431311 in words is "one hundred three million, four hundred thirty-one thousand, three hundred eleven".