31100040404131 has 2 divisors, whose sum is σ = 31100040404132. Its totient is φ = 31100040404130.

The previous prime is 31100040404119. The next prime is 31100040404137. The reversal of 31100040404131 is 13140404000113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31100040404131 - 2¹⁵ = 31100040371363 is a prime.

It is a super-2 number, since 2×31100040404131² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31100040404137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15550020202065 + 15550020202066.

It is an arithmetic number, because the mean of its divisors is an integer number (15550020202066).

Almost surely, 2^{31100040404131} is an apocalyptic number.

31100040404131 is a deficient number, since it is larger than the sum of its proper divisors (1).

31100040404131 is an equidigital number, since it uses as much as digits as its factorization.

31100040404131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31100040404131 its reverse (13140404000113), we get a palindrome (44240444404244).

The spelling of 31100040404131 in words is "thirty-one trillion, one hundred billion, forty million, four hundred four thousand, one hundred thirty-one".