31133220203 has 8 divisors (see below), whose sum is σ = 32779269120. Its totient is φ = 29487917160.

The previous prime is 31133220191. The next prime is 31133220221. The reversal of 31133220203 is 30202233113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31133220203 - 2⁸ = 31133219947 is a prime.

It is a super-2 number, since 2×31133220203² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31133220253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99743 + ... + 268728.

It is an arithmetic number, because the mean of its divisors is an integer number (4097408640).

Almost surely, 2^31133220203 is an apocalyptic number.

31133220203 is a deficient number, since it is larger than the sum of its proper divisors (1646048917).

31133220203 is a wasteful number, since it uses less digits than its factorization.

31133220203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372937.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31133220203 its reverse (30202233113), we get a palindrome (61335453316).

The spelling of 31133220203 in words is "thirty-one billion, one hundred thirty-three million, two hundred twenty thousand, two hundred three".