31412609 has 2 divisors, whose sum is σ = 31412610. Its totient is φ = 31412608.

The previous prime is 31412599. The next prime is 31412629. The reversal of 31412609 is 90621413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26884225 + 4528384 = 5185^2 + 2128^2 .

It is a cyclic number.

It is not a de Polignac number, because 31412609 - 2¹² = 31408513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31412629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15706304 + 15706305.

It is an arithmetic number, because the mean of its divisors is an integer number (15706305).

Almost surely, 2^31412609 is an apocalyptic number.

It is an amenable number.

31412609 is a deficient number, since it is larger than the sum of its proper divisors (1).

31412609 is an equidigital number, since it uses as much as digits as its factorization.

31412609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 31412609 is about 5604.6952637945. The cubic root of 31412609 is about 315.5256495983.

The spelling of 31412609 in words is "thirty-one million, four hundred twelve thousand, six hundred nine".