31473145 has 8 divisors (see below), whose sum is σ = 41201280. Its totient is φ = 22889520.

The previous prime is 31473109. The next prime is 31473151. The reversal of 31473145 is 54137413.

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

It is not a de Polignac number, because 31473145 - 2⁹ = 31472633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286065 + ... + 286174.

It is an arithmetic number, because the mean of its divisors is an integer number (5150160).

Almost surely, 2^31473145 is an apocalyptic number.

It is an amenable number.

31473145 is a deficient number, since it is larger than the sum of its proper divisors (9728135).

31473145 is a wasteful number, since it uses less digits than its factorization.

31473145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572255.

The product of its digits is 5040, while the sum is 28.

The square root of 31473145 is about 5610.0931364818. The cubic root of 31473145 is about 315.7282052457.

The spelling of 31473145 in words is "thirty-one million, four hundred seventy-three thousand, one hundred forty-five".