31423223071 has 2 divisors, whose sum is σ = 31423223072. Its totient is φ = 31423223070.

The previous prime is 31423223003. The next prime is 31423223081. The reversal of 31423223071 is 17032232413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31423223071 - 2²¹ = 31421125919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31423223081) 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, 15711611535 + 15711611536.

It is an arithmetic number, because the mean of its divisors is an integer number (15711611536).

Almost surely, 2^31423223071 is an apocalyptic number.

31423223071 is a deficient number, since it is larger than the sum of its proper divisors (1).

31423223071 is an equidigital number, since it uses as much as digits as its factorization.

31423223071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 31423223071 its reverse (17032232413), we get a palindrome (48455455484).

The spelling of 31423223071 in words is "thirty-one billion, four hundred twenty-three million, two hundred twenty-three thousand, seventy-one".