106431473503987 has 2 divisors, whose sum is σ = 106431473503988. Its totient is φ = 106431473503986.

The previous prime is 106431473503973. The next prime is 106431473504053. The reversal of 106431473503987 is 789305374134601.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106431473503987 is a prime.

It is a super-2 number, since 2×106431473503987² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106431473503387) 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, 53215736751993 + 53215736751994.

It is an arithmetic number, because the mean of its divisors is an integer number (53215736751994).

Almost surely, 2^{106431473503987} is an apocalyptic number.

106431473503987 is a deficient number, since it is larger than the sum of its proper divisors (1).

106431473503987 is an equidigital number, since it uses as much as digits as its factorization.

106431473503987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45722880, while the sum is 61.

The spelling of 106431473503987 in words is "one hundred six trillion, four hundred thirty-one billion, four hundred seventy-three million, five hundred three thousand, nine hundred eighty-seven".