31994030 has 16 divisors (see below), whose sum is σ = 57704400. Its totient is φ = 12772032.

The previous prime is 31994023. The next prime is 31994057. The reversal of 31994030 is 3049913.

It is a junction number, because it is equal to n+sod(n) for n = 31993984 and 31994002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2546 + ... + 8394.

It is an arithmetic number, because the mean of its divisors is an integer number (3606525).

Almost surely, 2^31994030 is an apocalyptic number.

31994030 is a deficient number, since it is larger than the sum of its proper divisors (25710370).

31994030 is a wasteful number, since it uses less digits than its factorization.

31994030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6403.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 31994030 is about 5656.3265464434. The cubic root of 31994030 is about 317.4604658651.

It can be divided in two parts, 319 and 94030, that added together give a palindrome (94349).

The spelling of 31994030 in words is "thirty-one million, nine hundred ninety-four thousand, thirty".