31007425 has 12 divisors (see below), whose sum is σ = 38730160. Its totient is φ = 24624720.

The previous prime is 31007413. The next prime is 31007447. The reversal of 31007425 is 52470013.

It is a de Polignac number, because none of the positive numbers 2^k-31007425 is a prime.

It is a super-2 number, since 2×31007425² = 1922920810261250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31007396 and 31007405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 987 + ... + 7936.

Almost surely, 2^31007425 is an apocalyptic number.

It is an amenable number.

31007425 is a deficient number, since it is larger than the sum of its proper divisors (7722735).

31007425 is a wasteful number, since it uses less digits than its factorization.

31007425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9072 (or 9067 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 31007425 is about 5568.4311075922. The cubic root of 31007425 is about 314.1631436148.

Adding to 31007425 its reverse (52470013), we get a palindrome (83477438).

The spelling of 31007425 in words is "thirty-one million, seven thousand, four hundred twenty-five".