31426425 has 36 divisors (see below), whose sum is σ = 56653740. Its totient is φ = 16652160.

The previous prime is 31426411. The next prime is 31426471. The reversal of 31426425 is 52462413.

31426425 is a `hidden beast` number, since 3 + 14 + 2 + 642 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 21609 + 31404816 = 147^2 + 5604^2 .

It is not a de Polignac number, because 31426425 - 2⁵ = 31426393 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 43971 + ... + 44679.

It is an arithmetic number, because the mean of its divisors is an integer number (1573715).

Almost surely, 2^31426425 is an apocalyptic number.

It is an amenable number.

31426425 is a deficient number, since it is larger than the sum of its proper divisors (25227315).

31426425 is a wasteful number, since it uses less digits than its factorization.

31426425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 914 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 31426425 is about 5605.9276663189. The cubic root of 31426425 is about 315.5719013378.

Adding to 31426425 its reverse (52462413), we get a palindrome (83888838).

It can be divided in two parts, 3 and 1426425, that multiplied together give a triangular number (4279275 = T₂₉₂₅).

The spelling of 31426425 in words is "thirty-one million, four hundred twenty-six thousand, four hundred twenty-five".