31323103 has 32 divisors (see below), whose sum is σ = 39168000. Its totient is φ = 24992352.

The previous prime is 31323023. The next prime is 31323107. The reversal of 31323103 is 30132313.

It is not a de Polignac number, because 31323103 - 2¹³ = 31314911 is a prime.

It is a super-2 number, since 2×31323103² = 1962273563097218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31323107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 467476 + ... + 467542.

It is an arithmetic number, because the mean of its divisors is an integer number (1224000).

Almost surely, 2^31323103 is an apocalyptic number.

31323103 is a deficient number, since it is larger than the sum of its proper divisors (7844897).

31323103 is an equidigital number, since it uses as much as digits as its factorization.

31323103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 31323103 is about 5596.7046554200. The cubic root of 31323103 is about 315.2256818929.

Adding to 31323103 its reverse (30132313), we get a palindrome (61455416).

It can be divided in two parts, 3132310 and 3, that added together give a palindrome (3132313).

The spelling of 31323103 in words is "thirty-one million, three hundred twenty-three thousand, one hundred three".