31916758241 has 2 divisors, whose sum is σ = 31916758242. Its totient is φ = 31916758240.

The previous prime is 31916758199. The next prime is 31916758267. The reversal of 31916758241 is 14285761913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30309069025 + 1607689216 = 174095^2 + 40096^2 .

It is an emirp because it is prime and its reverse (14285761913) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31916758241 - 2¹⁰ = 31916757217 is a prime.

It is a super-2 number, since 2×31916758241² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31906758241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15958379120 + 15958379121.

It is an arithmetic number, because the mean of its divisors is an integer number (15958379121).

Almost surely, 2^31916758241 is an apocalyptic number.

It is an amenable number.

31916758241 is a deficient number, since it is larger than the sum of its proper divisors (1).

31916758241 is an equidigital number, since it uses as much as digits as its factorization.

31916758241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The spelling of 31916758241 in words is "thirty-one billion, nine hundred sixteen million, seven hundred fifty-eight thousand, two hundred forty-one".