31033113200261 has 2 divisors, whose sum is σ = 31033113200262. Its totient is φ = 31033113200260.

The previous prime is 31033113200213. The next prime is 31033113200279. The reversal of 31033113200261 is 16200231133013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18887846380225 + 12145266820036 = 4346015^2 + 3485006^2 .

It is a cyclic number.

It is not a de Polignac number, because 31033113200261 - 2⁶ = 31033113200197 is a prime.

It is a super-2 number, since 2×31033113200261² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31033113200261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31033113200461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15516556600130 + 15516556600131.

It is an arithmetic number, because the mean of its divisors is an integer number (15516556600131).

Almost surely, 2^{31033113200261} is an apocalyptic number.

It is an amenable number.

31033113200261 is a deficient number, since it is larger than the sum of its proper divisors (1).

31033113200261 is an equidigital number, since it uses as much as digits as its factorization.

31033113200261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31033113200261 its reverse (16200231133013), we get a palindrome (47233344333274).

The spelling of 31033113200261 in words is "thirty-one trillion, thirty-three billion, one hundred thirteen million, two hundred thousand, two hundred sixty-one".