31453047 has 12 divisors (see below), whose sum is σ = 45522360. Its totient is φ = 20927088.

The previous prime is 31453039. The next prime is 31453133. The reversal of 31453047 is 74035413.

It is not a de Polignac number, because 31453047 - 2³ = 31453039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31453047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31453447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1729 + ... + 8117.

It is an arithmetic number, because the mean of its divisors is an integer number (3793530).

Almost surely, 2^31453047 is an apocalyptic number.

31453047 is a deficient number, since it is larger than the sum of its proper divisors (14069313).

31453047 is a wasteful number, since it uses less digits than its factorization.

31453047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6942 (or 6939 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 31453047 is about 5608.3016145710. The cubic root of 31453047 is about 315.6609854340.

It can be divided in two parts, 314 and 53047, that added together give a square (53361 = 231²).

The spelling of 31453047 in words is "thirty-one million, four hundred fifty-three thousand, forty-seven".