30031007 has 4 divisors (see below), whose sum is σ = 30044016. Its totient is φ = 30018000.

The previous prime is 30030991. The next prime is 30031021. The reversal of 30031007 is 70013003.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30031007 - 2⁴ = 30030991 is a prime.

It is a super-2 number, since 2×30031007² = 1803722762868098, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30030982 and 30031000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003 + ... + 8004.

It is an arithmetic number, because the mean of its divisors is an integer number (7511004).

Almost surely, 2^30031007 is an apocalyptic number.

30031007 is a deficient number, since it is larger than the sum of its proper divisors (13009).

30031007 is a wasteful number, since it uses less digits than its factorization.

30031007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13008.

The product of its (nonzero) digits is 63, while the sum is 14.

The square root of 30031007 is about 5480.0553829318. The cubic root of 30031007 is about 310.8302647999.

The spelling of 30031007 in words is "thirty million, thirty-one thousand, seven".