30122131 has 4 divisors (see below), whose sum is σ = 32439232. Its totient is φ = 27805032.

The previous prime is 30122123. The next prime is 30122137. The reversal of 30122131 is 13122103.

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 30122131 - 2³ = 30122123 is a prime.

It is a super-2 number, since 2×30122131² = 1814685551962322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 2317087 = 30122131 / (3 + 0 + 1 + 2 + 2 + 1 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30122137) 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, 1158531 + ... + 1158556.

It is an arithmetic number, because the mean of its divisors is an integer number (8109808).

Almost surely, 2^30122131 is an apocalyptic number.

30122131 is a deficient number, since it is larger than the sum of its proper divisors (2317101).

30122131 is a wasteful number, since it uses less digits than its factorization.

30122131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317100.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 30122131 is about 5488.3632350638. The cubic root of 30122131 is about 311.1443345991.

Adding to 30122131 its reverse (13122103), we get a palindrome (43244234).

The spelling of 30122131 in words is "thirty million, one hundred twenty-two thousand, one hundred thirty-one".