31683425 has 12 divisors (see below), whose sum is σ = 39422700. Its totient is φ = 25259520.

The previous prime is 31683419. The next prime is 31683473. The reversal of 31683425 is 52438613.

It can be written as a sum of positive squares in 6 ways, for example, as 10962721 + 20720704 = 3311^2 + 4552^2 .

It is not a de Polignac number, because 31683425 - 2⁴ = 31683409 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31683391 and 31683400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5801 + ... + 9849.

It is an arithmetic number, because the mean of its divisors is an integer number (3285225).

Almost surely, 2^31683425 is an apocalyptic number.

It is an amenable number.

31683425 is a deficient number, since it is larger than the sum of its proper divisors (7739275).

31683425 is a wasteful number, since it uses less digits than its factorization.

31683425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4372 (or 4367 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 31683425 is about 5628.8031587541. The cubic root of 31683425 is about 316.4297982423.

The spelling of 31683425 in words is "thirty-one million, six hundred eighty-three thousand, four hundred twenty-five".