31485485 has 8 divisors (see below), whose sum is σ = 37834776. Its totient is φ = 25153600.

The previous prime is 31485473. The next prime is 31485497. The reversal of 31485485 is 58458413.

It is an interprime number because it is at equal distance from previous prime (31485473) and next prime (31485497).

It can be written as a sum of positive squares in 4 ways, for example, as 5004169 + 26481316 = 2237^2 + 5146^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31485485 - 2¹⁰ = 31484461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35 + ... + 7935.

It is an arithmetic number, because the mean of its divisors is an integer number (4729347).

Almost surely, 2^31485485 is an apocalyptic number.

It is an amenable number.

31485485 is a deficient number, since it is larger than the sum of its proper divisors (6349291).

31485485 is an equidigital number, since it uses as much as digits as its factorization.

31485485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8703.

The product of its digits is 76800, while the sum is 38.

The square root of 31485485 is about 5611.1928321882. The cubic root of 31485485 is about 315.7694634567.

The spelling of 31485485 in words is "thirty-one million, four hundred eighty-five thousand, four hundred eighty-five".