31030030 has 16 divisors (see below), whose sum is σ = 57217104. Its totient is φ = 12109120.

The previous prime is 31030001. The next prime is 31030067. The reversal of 31030030 is 3003013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 31029989 and 31030016.

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, 37432 + ... + 38251.

It is an arithmetic number, because the mean of its divisors is an integer number (3576069).

Almost surely, 2^31030030 is an apocalyptic number.

31030030 is a deficient number, since it is larger than the sum of its proper divisors (26187074).

31030030 is a wasteful number, since it uses less digits than its factorization.

31030030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75731.

The product of its (nonzero) digits is 27, while the sum is 10.

The square root of 31030030 is about 5570.4604836584. The cubic root of 31030030 is about 314.2394686973.

Adding to 31030030 its reverse (3003013), we get a palindrome (34033043).

The spelling of 31030030 in words is "thirty-one million, thirty thousand, thirty".