31321133003103 has 4 divisors (see below), whose sum is σ = 41761510670808. Its totient is φ = 20880755335400.

The previous prime is 31321133003081. The next prime is 31321133003107. The reversal of 31321133003103 is 30130033112313.

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 31321133003103 - 2¹² = 31321132999007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321133003107) 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, 5220188833848 + ... + 5220188833853.

It is an arithmetic number, because the mean of its divisors is an integer number (10440377667702).

Almost surely, 2^{31321133003103} is an apocalyptic number.

31321133003103 is a deficient number, since it is larger than the sum of its proper divisors (10440377667705).

31321133003103 is a wasteful number, since it uses less digits than its factorization.

31321133003103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10440377667704.

The product of its (nonzero) digits is 1458, while the sum is 24.

Adding to 31321133003103 its reverse (30130033112313), we get a palindrome (61451166115416).

The spelling of 31321133003103 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred thirty-three million, three thousand, one hundred three".