31352534861 has 2 divisors, whose sum is σ = 31352534862. Its totient is φ = 31352534860.

The previous prime is 31352534849. The next prime is 31352534879. The reversal of 31352534861 is 16843525313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30677522500 + 675012361 = 175150^2 + 25981^2 .

It is a cyclic number.

It is not a de Polignac number, because 31352534861 - 2⁶ = 31352534797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31352534881) 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, 15676267430 + 15676267431.

It is an arithmetic number, because the mean of its divisors is an integer number (15676267431).

Almost surely, 2^31352534861 is an apocalyptic number.

It is an amenable number.

31352534861 is a deficient number, since it is larger than the sum of its proper divisors (1).

31352534861 is an equidigital number, since it uses as much as digits as its factorization.

31352534861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 41.

The spelling of 31352534861 in words is "thirty-one billion, three hundred fifty-two million, five hundred thirty-four thousand, eight hundred sixty-one".