31683485 has 4 divisors (see below), whose sum is σ = 38020188. Its totient is φ = 25346784.

The previous prime is 31683481. The next prime is 31683493. The reversal of 31683485 is 58438613.

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 23174596 + 8508889 = 4814^2 + 2917^2 .

It is a cyclic number.

It is not a de Polignac number, because 31683485 - 2² = 31683481 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31683481) 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, 3168344 + ... + 3168353.

It is an arithmetic number, because the mean of its divisors is an integer number (9505047).

Almost surely, 2^31683485 is an apocalyptic number.

It is an amenable number.

31683485 is a deficient number, since it is larger than the sum of its proper divisors (6336703).

31683485 is an equidigital number, since it uses as much as digits as its factorization.

31683485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6336702.

The product of its digits is 69120, while the sum is 38.

The square root of 31683485 is about 5628.8084884814. The cubic root of 31683485 is about 316.4299979869.

The spelling of 31683485 in words is "thirty-one million, six hundred eighty-three thousand, four hundred eighty-five".