231020030 has 16 divisors (see below), whose sum is σ = 418629600. Its totient is φ = 91787232.

The previous prime is 231019991. The next prime is 231020047. The reversal of 231020030 is 30020132.

It is a super-2 number, since 2×231020030² = 106740508522401800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231019993 and 231020020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76034 + ... + 79013.

It is an arithmetic number, because the mean of its divisors is an integer number (26164350).

Almost surely, 2^231020030 is an apocalyptic number.

231020030 is a deficient number, since it is larger than the sum of its proper divisors (187609570).

231020030 is a wasteful number, since it uses less digits than its factorization.

231020030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155203.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 231020030 is about 15199.3430779097. The cubic root of 231020030 is about 613.5969779302.

Adding to 231020030 its reverse (30020132), we get a palindrome (261040162).

The spelling of 231020030 in words is "two hundred thirty-one million, twenty thousand, thirty".