31430826137 has 2 divisors, whose sum is σ = 31430826138. Its totient is φ = 31430826136.

The previous prime is 31430826083. The next prime is 31430826143. The reversal of 31430826137 is 73162803413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18133046281 + 13297779856 = 134659^2 + 115316^2 .

It is a cyclic number.

It is not a de Polignac number, because 31430826137 - 2⁶ = 31430826073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31430826137.

It is not a weakly prime, because it can be changed into another prime (31430825137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15715413068 + 15715413069.

It is an arithmetic number, because the mean of its divisors is an integer number (15715413069).

Almost surely, 2^31430826137 is an apocalyptic number.

It is an amenable number.

31430826137 is a deficient number, since it is larger than the sum of its proper divisors (1).

31430826137 is an equidigital number, since it uses as much as digits as its factorization.

31430826137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 31430826137 in words is "thirty-one billion, four hundred thirty million, eight hundred twenty-six thousand, one hundred thirty-seven".