31468009 has 12 divisors (see below), whose sum is σ = 33779460. Its totient is φ = 29302560.

The previous prime is 31468001. The next prime is 31468013. The reversal of 31468009 is 90086413.

It can be written as a sum of positive squares in 2 ways, for example, as 1525225 + 29942784 = 1235^2 + 5472^2 .

It is not a de Polignac number, because 31468009 - 2³ = 31468001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31468001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21307 + ... + 22735.

It is an arithmetic number, because the mean of its divisors is an integer number (2814955).

Almost surely, 2^31468009 is an apocalyptic number.

It is an amenable number.

31468009 is a deficient number, since it is larger than the sum of its proper divisors (2311451).

31468009 is a wasteful number, since it uses less digits than its factorization.

31468009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528 (or 1509 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 31468009 is about 5609.6353713945. The cubic root of 31468009 is about 315.7110300924.

The spelling of 31468009 in words is "thirty-one million, four hundred sixty-eight thousand, nine".