31668341 has 4 divisors (see below), whose sum is σ = 31829292. Its totient is φ = 31507392.

The previous prime is 31668281. The next prime is 31668347. The reversal of 31668341 is 14386613.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18887716 + 12780625 = 4346^2 + 3575^2 .

It is not a de Polignac number, because 31668341 - 2¹⁴ = 31651957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31668298 and 31668307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31668347) 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, 80180 + ... + 80573.

It is an arithmetic number, because the mean of its divisors is an integer number (7957323).

Almost surely, 2^31668341 is an apocalyptic number.

It is an amenable number.

31668341 is a deficient number, since it is larger than the sum of its proper divisors (160951).

31668341 is a wasteful number, since it uses less digits than its factorization.

31668341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160950.

The product of its digits is 10368, while the sum is 32.

The square root of 31668341 is about 5627.4631051656. The cubic root of 31668341 is about 316.3795744557.

The spelling of 31668341 in words is "thirty-one million, six hundred sixty-eight thousand, three hundred forty-one".