31321100232203 has 2 divisors, whose sum is σ = 31321100232204. Its totient is φ = 31321100232202.

The previous prime is 31321100232179. The next prime is 31321100232277. The reversal of 31321100232203 is 30223200112313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31321100232203 - 2²⁴ = 31321083454987 is a prime.

It is a super-2 number, since 2×31321100232203² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31329100232203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660550116101 + 15660550116102.

It is an arithmetic number, because the mean of its divisors is an integer number (15660550116102).

Almost surely, 2^{31321100232203} is an apocalyptic number.

31321100232203 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321100232203 is an equidigital number, since it uses as much as digits as its factorization.

31321100232203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31321100232203 its reverse (30223200112313), we get a palindrome (61544300344516).

The spelling of 31321100232203 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred million, two hundred thirty-two thousand, two hundred three".