31484605 has 4 divisors (see below), whose sum is σ = 37781532. Its totient is φ = 25187680.

The previous prime is 31484569. The next prime is 31484617. The reversal of 31484605 is 50648413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50648413 = 29 ⋅1746497.

It can be written as a sum of positive squares in 2 ways, for example, as 19829209 + 11655396 = 4453^2 + 3414^2 .

It is not a de Polignac number, because 31484605 - 2⁹ = 31484093 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3148456 + ... + 3148465.

It is an arithmetic number, because the mean of its divisors is an integer number (9445383).

Almost surely, 2^31484605 is an apocalyptic number.

It is an amenable number.

31484605 is a deficient number, since it is larger than the sum of its proper divisors (6296927).

31484605 is an equidigital number, since it uses as much as digits as its factorization.

31484605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6296926.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 31484605 is about 5611.1144169407. The cubic root of 31484605 is about 315.7665215750.

The spelling of 31484605 in words is "thirty-one million, four hundred eighty-four thousand, six hundred five".