31400441030261 has 2 divisors, whose sum is σ = 31400441030262. Its totient is φ = 31400441030260.

The previous prime is 31400441030243. The next prime is 31400441030263. The reversal of 31400441030261 is 16203014400413.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18516067180900 + 12884373849361 = 4303030^2 + 3589481^2 .

It is a cyclic number.

It is not a de Polignac number, because 31400441030261 - 2³⁰ = 31399367288437 is a prime.

It is a super-3 number, since 3×31400441030261³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

Together with 31400441030263, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31400441030263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15700220515130 + 15700220515131.

It is an arithmetic number, because the mean of its divisors is an integer number (15700220515131).

Almost surely, 2^{31400441030261} is an apocalyptic number.

It is an amenable number.

31400441030261 is a deficient number, since it is larger than the sum of its proper divisors (1).

31400441030261 is an equidigital number, since it uses as much as digits as its factorization.

31400441030261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 31400441030261 its reverse (16203014400413), we get a palindrome (47603455430674).

The spelling of 31400441030261 in words is "thirty-one trillion, four hundred billion, four hundred forty-one million, thirty thousand, two hundred sixty-one".