30423131 has 2 divisors, whose sum is σ = 30423132. Its totient is φ = 30423130.

The previous prime is 30423109. The next prime is 30423143. The reversal of 30423131 is 13132403.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (13132403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30423131 - 2⁶ = 30423067 is a prime.

It is a super-2 number, since 2×30423131² = 1851133799686322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30423191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15211565 + 15211566.

It is an arithmetic number, because the mean of its divisors is an integer number (15211566).

Almost surely, 2^30423131 is an apocalyptic number.

30423131 is a deficient number, since it is larger than the sum of its proper divisors (1).

30423131 is an equidigital number, since it uses as much as digits as its factorization.

30423131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 30423131 is about 5515.7167258662. The cubic root of 30423131 is about 312.1772873356.

Adding to 30423131 its reverse (13132403), we get a palindrome (43555534).

The spelling of 30423131 in words is "thirty million, four hundred twenty-three thousand, one hundred thirty-one".