31020131303017 has 2 divisors, whose sum is σ = 31020131303018. Its totient is φ = 31020131303016.

The previous prime is 31020131303011. The next prime is 31020131303113. The reversal of 31020131303017 is 71030313102013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25809407447616 + 5210723855401 = 5080296^2 + 2282701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31020131303017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31020131302982 and 31020131303000.

It is not a weakly prime, because it can be changed into another prime (31020131303011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510065651508 + 15510065651509.

It is an arithmetic number, because the mean of its divisors is an integer number (15510065651509).

Almost surely, 2^{31020131303017} is an apocalyptic number.

It is an amenable number.

31020131303017 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020131303017 is an equidigital number, since it uses as much as digits as its factorization.

31020131303017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 25.

The spelling of 31020131303017 in words is "thirty-one trillion, twenty billion, one hundred thirty-one million, three hundred three thousand, seventeen".