231121030 has 32 divisors (see below), whose sum is σ = 476248896. Its totient is φ = 79108224.

The previous prime is 231121021. The next prime is 231121031. The reversal of 231121030 is 30121132.

It is a self number, because there is not a number n which added to its sum of digits gives 231121030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231121031) 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, 44952 + ... + 49828.

It is an arithmetic number, because the mean of its divisors is an integer number (14882778).

Almost surely, 2^231121030 is an apocalyptic number.

231121030 is an abundant number, since it is smaller than the sum of its proper divisors (245127866).

231121030 is a wasteful number, since it uses less digits than its factorization.

231121030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5568.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 231121030 is about 15202.6652268607. The cubic root of 231121030 is about 613.6863847024.

Adding to 231121030 its reverse (30121132), we get a palindrome (261242162).

It can be divided in two parts, 23112 and 1030, that added together give a palindrome (24142).

The spelling of 231121030 in words is "two hundred thirty-one million, one hundred twenty-one thousand, thirty".