31071004 has 24 divisors (see below), whose sum is σ = 57424640. Its totient is φ = 14669424.

The previous prime is 31070987. The next prime is 31071011. The reversal of 31071004 is 40017013.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 34747 + ... + 35629.

Almost surely, 2^31071004 is an apocalyptic number.

It is an amenable number.

31071004 is a deficient number, since it is larger than the sum of its proper divisors (26353636).

31071004 is a wasteful number, since it uses less digits than its factorization.

31071004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369 (or 1367 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 31071004 is about 5574.1370632592. The cubic root of 31071004 is about 314.3777217044.

Adding to 31071004 its reverse (40017013), we get a palindrome (71088017).

The spelling of 31071004 in words is "thirty-one million, seventy-one thousand, four".