31441233123691 has 2 divisors, whose sum is σ = 31441233123692. Its totient is φ = 31441233123690.

The previous prime is 31441233123551. The next prime is 31441233123719. The reversal of 31441233123691 is 19632133214413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31441233123691 - 2³³ = 31432643189099 is a prime.

It is a super-2 number, since 2×31441233123691² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31441233123191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15720616561845 + 15720616561846.

It is an arithmetic number, because the mean of its divisors is an integer number (15720616561846).

Almost surely, 2^{31441233123691} is an apocalyptic number.

31441233123691 is a deficient number, since it is larger than the sum of its proper divisors (1).

31441233123691 is an equidigital number, since it uses as much as digits as its factorization.

31441233123691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 43.

The spelling of 31441233123691 in words is "thirty-one trillion, four hundred forty-one billion, two hundred thirty-three million, one hundred twenty-three thousand, six hundred ninety-one".