31043401031 has 2 divisors, whose sum is σ = 31043401032. Its totient is φ = 31043401030.

The previous prime is 31043400923. The next prime is 31043401057. The reversal of 31043401031 is 13010434013.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31043401031 is a prime.

It is a super-2 number, since 2×31043401031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31043400994 and 31043401012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31043401061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15521700515 + 15521700516.

It is an arithmetic number, because the mean of its divisors is an integer number (15521700516).

Almost surely, 2^31043401031 is an apocalyptic number.

31043401031 is a deficient number, since it is larger than the sum of its proper divisors (1).

31043401031 is an equidigital number, since it uses as much as digits as its factorization.

31043401031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31043401031 its reverse (13010434013), we get a palindrome (44053835044).

The spelling of 31043401031 in words is "thirty-one billion, forty-three million, four hundred one thousand, thirty-one".