30311229 has 16 divisors (see below), whose sum is σ = 43760192. Its totient is φ = 18551808.

The previous prime is 30311227. The next prime is 30311243. The reversal of 30311229 is 92211303.

It is a happy number.

It is not a de Polignac number, because 30311229 - 2¹ = 30311227 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30311227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5514 + ... + 9540.

It is an arithmetic number, because the mean of its divisors is an integer number (2735012).

Almost surely, 2^30311229 is an apocalyptic number.

30311229 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

30311229 is a deficient number, since it is larger than the sum of its proper divisors (13448963).

30311229 is a wasteful number, since it uses less digits than its factorization.

30311229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236.

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

The square root of 30311229 is about 5505.5634589023. The cubic root of 30311229 is about 311.7940681669.

The spelling of 30311229 in words is "thirty million, three hundred eleven thousand, two hundred twenty-nine".