2131020312233 has 2 divisors, whose sum is σ = 2131020312234. Its totient is φ = 2131020312232.

The previous prime is 2131020312217. The next prime is 2131020312271. The reversal of 2131020312233 is 3322130201312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1544820296464 + 586200015769 = 1242908^2 + 765637^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131020312233 - 2⁴ = 2131020312217 is a prime.

It is a super-2 number, since 2×2131020312233² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2131020312199 and 2131020312208.

It is not a weakly prime, because it can be changed into another prime (2131020315233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065510156116 + 1065510156117.

It is an arithmetic number, because the mean of its divisors is an integer number (1065510156117).

Almost surely, 2^{2131020312233} is an apocalyptic number.

It is an amenable number.

2131020312233 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131020312233 is an equidigital number, since it uses as much as digits as its factorization.

2131020312233 is an evil number, because the sum of its binary digits is even.

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

Adding to 2131020312233 its reverse (3322130201312), we get a palindrome (5453150513545).

The spelling of 2131020312233 in words is "two trillion, one hundred thirty-one billion, twenty million, three hundred twelve thousand, two hundred thirty-three".