31425065 has 32 divisors (see below), whose sum is σ = 44997120. Its totient is φ = 20620800.

The previous prime is 31425059. The next prime is 31425071. The reversal of 31425065 is 56052413.

It is an interprime number because it is at equal distance from previous prime (31425059) and next prime (31425071).

It is not a de Polignac number, because 31425065 - 2⁴ = 31425049 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 87356 + ... + 87714.

It is an arithmetic number, because the mean of its divisors is an integer number (1406160).

Almost surely, 2^31425065 is an apocalyptic number.

31425065 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31425065 is a deficient number, since it is larger than the sum of its proper divisors (13572055).

31425065 is a wasteful number, since it uses less digits than its factorization.

31425065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 31425065 is about 5605.8063648328. The cubic root of 31425065 is about 315.5673490756.

Adding to 31425065 its reverse (56052413), we get a palindrome (87477478).

The spelling of 31425065 in words is "thirty-one million, four hundred twenty-five thousand, sixty-five".