231021030 has 32 divisors (see below), whose sum is σ = 563544288. Its totient is φ = 60595200.

The previous prime is 231021029. The next prime is 231021061. The reversal of 231021030 is 30120132.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 231020997 and 231021015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61291 + ... + 64950.

It is an arithmetic number, because the mean of its divisors is an integer number (17610759).

Almost surely, 2^231021030 is an apocalyptic number.

231021030 is an abundant number, since it is smaller than the sum of its proper divisors (332523258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231021030 is a wasteful number, since it uses less digits than its factorization.

231021030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126312.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 231021030 is about 15199.3759740326. The cubic root of 231021030 is about 613.5978632735.

Adding to 231021030 its reverse (30120132), we get a palindrome (261141162).

The spelling of 231021030 in words is "two hundred thirty-one million, twenty-one thousand, thirty".