31475045 has 32 divisors (see below), whose sum is σ = 44556288. Its totient is φ = 20901888.

The previous prime is 31475029. The next prime is 31475053. The reversal of 31475045 is 54057413.

It is not a de Polignac number, because 31475045 - 2⁴ = 31475029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31474999 and 31475017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247772 + ... + 247898.

It is an arithmetic number, because the mean of its divisors is an integer number (1392384).

Almost surely, 2^31475045 is an apocalyptic number.

31475045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31475045 is a deficient number, since it is larger than the sum of its proper divisors (13081243).

31475045 is a wasteful number, since it uses less digits than its factorization.

31475045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 31475045 is about 5610.2624715783. The cubic root of 31475045 is about 315.7345585089.

It can be divided in two parts, 3147 and 5045, that added together give a 13-th power (8192 = 2¹³).

The spelling of 31475045 in words is "thirty-one million, four hundred seventy-five thousand, forty-five".