30122931 has 8 divisors (see below), whose sum is σ = 40192000. Its totient is φ = 20067912.

The previous prime is 30122927. The next prime is 30122951. The reversal of 30122931 is 13922103.

It is a happy number.

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

It is not a de Polignac number, because 30122931 - 2² = 30122927 is a prime.

It is a super-2 number, since 2×30122931² = 1814781944061522, 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 = 30122898 and 30122907.

It is not an unprimeable number, because it can be changed into a prime (30122951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3486 + ... + 8508.

It is an arithmetic number, because the mean of its divisors is an integer number (5024000).

Almost surely, 2^30122931 is an apocalyptic number.

30122931 is a deficient number, since it is larger than the sum of its proper divisors (10069069).

30122931 is a wasteful number, since it uses less digits than its factorization.

30122931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7025.

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

The square root of 30122931 is about 5488.4361160535. The cubic root of 30122931 is about 311.1470890885.

It can be divided in two parts, 301 and 22931, that added together give a palindrome (23232).

The spelling of 30122931 in words is "thirty million, one hundred twenty-two thousand, nine hundred thirty-one".