31132013203 has 4 divisors (see below), whose sum is σ = 31143732840. Its totient is φ = 31120293568.

The previous prime is 31132013183. The next prime is 31132013233. The reversal of 31132013203 is 30231023113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30231023113 = 89 ⋅339674417.

It is a cyclic number.

It is not a de Polignac number, because 31132013203 - 2¹³ = 31132005011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31132013233) 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, 5855833 + ... + 5861146.

It is an arithmetic number, because the mean of its divisors is an integer number (7785933210).

Almost surely, 2^31132013203 is an apocalyptic number.

31132013203 is a deficient number, since it is larger than the sum of its proper divisors (11719637).

31132013203 is a wasteful number, since it uses less digits than its factorization.

31132013203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11719636.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31132013203 its reverse (30231023113), we get a palindrome (61363036316).

The spelling of 31132013203 in words is "thirty-one billion, one hundred thirty-two million, thirteen thousand, two hundred three".