31425045 has 32 divisors (see below), whose sum is σ = 52157952. Its totient is φ = 16145472.

The previous prime is 31425029. The next prime is 31425047. The reversal of 31425045 is 54052413.

It is not a de Polignac number, because 31425045 - 2⁴ = 31425029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425047) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 53242 + ... + 53828.

It is an arithmetic number, because the mean of its divisors is an integer number (1629936).

Almost surely, 2^31425045 is an apocalyptic number.

It is an amenable number.

31425045 is a deficient number, since it is larger than the sum of its proper divisors (20732907).

31425045 is a wasteful number, since it uses less digits than its factorization.

31425045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 31425045 is about 5605.8045809678. The cubic root of 31425045 is about 315.5672821296.

Adding to 31425045 its reverse (54052413), we get a palindrome (85477458).

The spelling of 31425045 in words is "thirty-one million, four hundred twenty-five thousand, forty-five".