31341609 has 12 divisors (see below), whose sum is σ = 48753796. Its totient is φ = 19287072.

The previous prime is 31341599. The next prime is 31341623. The reversal of 31341609 is 90614313.

31341609 is a `hidden beast` number, since 3 + 13 + 41 + 609 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2985984 + 28355625 = 1728^2 + 5325^2 .

It is not a de Polignac number, because 31341609 - 2⁴ = 31341593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31341649) 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, 133822 + ... + 134055.

Almost surely, 2^31341609 is an apocalyptic number.

31341609 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

31341609 is a deficient number, since it is larger than the sum of its proper divisors (17412187).

31341609 is a wasteful number, since it uses less digits than its factorization.

31341609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267896 (or 267893 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 31341609 is about 5598.3577056133. The cubic root of 31341609 is about 315.2877491579.

The spelling of 31341609 in words is "thirty-one million, three hundred forty-one thousand, six hundred nine".