31305763061 has 2 divisors, whose sum is σ = 31305763062. Its totient is φ = 31305763060.

The previous prime is 31305763039. The next prime is 31305763067. The reversal of 31305763061 is 16036750313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29463722500 + 1842040561 = 171650^2 + 42919^2 .

It is an emirp because it is prime and its reverse (16036750313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31305763061 - 2⁶ = 31305762997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31305763067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15652881530 + 15652881531.

It is an arithmetic number, because the mean of its divisors is an integer number (15652881531).

Almost surely, 2^31305763061 is an apocalyptic number.

It is an amenable number.

31305763061 is a deficient number, since it is larger than the sum of its proper divisors (1).

31305763061 is an equidigital number, since it uses as much as digits as its factorization.

31305763061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 35.

The spelling of 31305763061 in words is "thirty-one billion, three hundred five million, seven hundred sixty-three thousand, sixty-one".