31241409 has 8 divisors (see below), whose sum is σ = 41681952. Its totient is φ = 20814240.

The previous prime is 31241401. The next prime is 31241411. The reversal of 31241409 is 90414213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31241409 - 2³ = 31241401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31241401) 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 in 7 ways as a sum of consecutive naturals, for example, 5314 + ... + 9524.

It is an arithmetic number, because the mean of its divisors is an integer number (5210244).

Almost surely, 2^31241409 is an apocalyptic number.

It is an amenable number.

31241409 is a deficient number, since it is larger than the sum of its proper divisors (10440543).

31241409 is a wasteful number, since it uses less digits than its factorization.

31241409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6687.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 31241409 is about 5589.4014885317. The cubic root of 31241409 is about 314.9513958770.

The spelling of 31241409 in words is "thirty-one million, two hundred forty-one thousand, four hundred nine".