31950649 has 2 divisors, whose sum is σ = 31950650. Its totient is φ = 31950648.

The previous prime is 31950631. The next prime is 31950661. The reversal of 31950649 is 94605913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27405225 + 4545424 = 5235^2 + 2132^2 .

It is an emirp because it is prime and its reverse (94605913) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31950649 - 2¹¹ = 31948601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31950689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15975324 + 15975325.

It is an arithmetic number, because the mean of its divisors is an integer number (15975325).

Almost surely, 2^31950649 is an apocalyptic number.

It is an amenable number.

31950649 is a deficient number, since it is larger than the sum of its proper divisors (1).

31950649 is an equidigital number, since it uses as much as digits as its factorization.

31950649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 31950649 is about 5652.4905130394. The cubic root of 31950649 is about 317.3169184431.

The spelling of 31950649 in words is "thirty-one million, nine hundred fifty thousand, six hundred forty-nine".