31442103 has 48 divisors (see below), whose sum is σ = 57657600. Its totient is φ = 16035840.

The previous prime is 31442101. The next prime is 31442111. The reversal of 31442103 is 30124413.

It is not a de Polignac number, because 31442103 - 2¹ = 31442101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31442101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40503 + ... + 41271.

It is an arithmetic number, because the mean of its divisors is an integer number (1201200).

Almost surely, 2^31442103 is an apocalyptic number.

31442103 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31442103 is a deficient number, since it is larger than the sum of its proper divisors (26215497).

31442103 is a wasteful number, since it uses less digits than its factorization.

31442103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852 (or 849 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 31442103 is about 5607.3258332292. The cubic root of 31442103 is about 315.6243700670.

Adding to 31442103 its reverse (30124413), we get a palindrome (61566516).

The spelling of 31442103 in words is "thirty-one million, four hundred forty-two thousand, one hundred three".