30223131 has 4 divisors (see below), whose sum is σ = 40297512. Its totient is φ = 20148752.

The previous prime is 30223111. The next prime is 30223147. The reversal of 30223131 is 13132203.

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 30223131 - 2⁵ = 30223099 is a prime.

It is a super-2 number, since 2×30223131² = 1826875294886322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30223131.

It is not an unprimeable number, because it can be changed into a prime (30223111) 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, 5037186 + ... + 5037191.

It is an arithmetic number, because the mean of its divisors is an integer number (10074378).

Almost surely, 2^30223131 is an apocalyptic number.

30223131 is a deficient number, since it is larger than the sum of its proper divisors (10074381).

30223131 is a wasteful number, since it uses less digits than its factorization.

30223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10074380.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 30223131 is about 5497.5568209888. The cubic root of 30223131 is about 311.4917039977.

Adding to 30223131 its reverse (13132203), we get a palindrome (43355334).

The spelling of 30223131 in words is "thirty million, two hundred twenty-three thousand, one hundred thirty-one".