31470045 has 16 divisors (see below), whose sum is σ = 50991360. Its totient is φ = 16570944.

The previous prime is 31470037. The next prime is 31470067. The reversal of 31470045 is 54007413.

It is not a de Polignac number, because 31470045 - 2³ = 31470037 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31469997 and 31470024.

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 15 ways as a sum of consecutive naturals, for example, 12094 + ... + 14463.

It is an arithmetic number, because the mean of its divisors is an integer number (3186960).

Almost surely, 2^31470045 is an apocalyptic number.

It is an amenable number.

31470045 is a deficient number, since it is larger than the sum of its proper divisors (19521315).

31470045 is a wasteful number, since it uses less digits than its factorization.

31470045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26644.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 31470045 is about 5609.8168419299. The cubic root of 31470045 is about 315.7178388463.

Adding to 31470045 its reverse (54007413), we get a palindrome (85477458).

The spelling of 31470045 in words is "thirty-one million, four hundred seventy thousand, forty-five".