31459009 has 4 divisors (see below), whose sum is σ = 32826816. Its totient is φ = 30091204.

The previous prime is 31458983. The next prime is 31459019. The reversal of 31459009 is 90095413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31459009 - 2¹⁹ = 30934721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31459019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683869 + ... + 683914.

It is an arithmetic number, because the mean of its divisors is an integer number (8206704).

Almost surely, 2^31459009 is an apocalyptic number.

It is an amenable number.

31459009 is a deficient number, since it is larger than the sum of its proper divisors (1367807).

31459009 is a wasteful number, since it uses less digits than its factorization.

31459009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367806.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 31459009 is about 5608.8331228518. The cubic root of 31459009 is about 315.6809289379.

The spelling of 31459009 in words is "thirty-one million, four hundred fifty-nine thousand, nine".