30140931 has 8 divisors (see below), whose sum is σ = 40213504. Its totient is φ = 20081160.

The previous prime is 30140911. The next prime is 30140933. The reversal of 30140931 is 13904103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30140931 - 2⁶ = 30140867 is a prime.

It is a super-2 number, since 2×30140931² = 1816951443093522, 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 = 30140898 and 30140907.

It is not an unprimeable number, because it can be changed into a prime (30140933) by changing a digit.

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, 6486 + ... + 10116.

It is an arithmetic number, because the mean of its divisors is an integer number (5026688).

Almost surely, 2^30140931 is an apocalyptic number.

30140931 is a deficient number, since it is larger than the sum of its proper divisors (10072573).

30140931 is a wasteful number, since it uses less digits than its factorization.

30140931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6401.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 30140931 is about 5490.0756825384. The cubic root of 30140931 is about 311.2090522090.

The spelling of 30140931 in words is "thirty million, one hundred forty thousand, nine hundred thirty-one".