31320030103 has 4 divisors (see below), whose sum is σ = 32968452760. Its totient is φ = 29671607448.

The previous prime is 31320030101. The next prime is 31320030107. The reversal of 31320030103 is 30103002313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30103002313 = 14177 ⋅2123369.

It is a cyclic number.

It is not a de Polignac number, because 31320030103 - 2¹ = 31320030101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320030101) 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, 824211300 + ... + 824211337.

It is an arithmetic number, because the mean of its divisors is an integer number (8242113190).

Almost surely, 2^31320030103 is an apocalyptic number.

31320030103 is a deficient number, since it is larger than the sum of its proper divisors (1648422657).

31320030103 is a wasteful number, since it uses less digits than its factorization.

31320030103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648422656.

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

Adding to 31320030103 its reverse (30103002313), we get a palindrome (61423032416).

The spelling of 31320030103 in words is "thirty-one billion, three hundred twenty million, thirty thousand, one hundred three".