31006601 has 2 divisors, whose sum is σ = 31006602. Its totient is φ = 31006600.

The previous prime is 31006583. The next prime is 31006607. The reversal of 31006601 is 10660013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26512201 + 4494400 = 5149^2 + 2120^2 .

It is a cyclic number.

It is not a de Polignac number, because 31006601 - 2¹⁰ = 31005577 is a prime.

It is a super-2 number, since 2×31006601² = 1922818611146402, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31006601.

It is not a weakly prime, because it can be changed into another prime (31006607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15503300 + 15503301.

It is an arithmetic number, because the mean of its divisors is an integer number (15503301).

Almost surely, 2^31006601 is an apocalyptic number.

It is an amenable number.

31006601 is a deficient number, since it is larger than the sum of its proper divisors (1).

31006601 is an equidigital number, since it uses as much as digits as its factorization.

31006601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 31006601 is about 5568.3571185764. The cubic root of 31006601 is about 314.1603607037.

Adding to 31006601 its reverse (10660013), we get a palindrome (41666614).

The spelling of 31006601 in words is "thirty-one million, six thousand, six hundred one".