231120030 has 64 divisors (see below), whose sum is σ = 567336960. Its totient is φ = 60243456.

The previous prime is 231120023. The next prime is 231120037. The reversal of 231120030 is 30021132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231120023) and next prime (231120037).

It is a junction number, because it is equal to n+sod(n) for n = 231119988 and 231120015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231120037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267379 + ... + 268241.

It is an arithmetic number, because the mean of its divisors is an integer number (8864640).

Almost surely, 2^231120030 is an apocalyptic number.

231120030 is an abundant number, since it is smaller than the sum of its proper divisors (336216930).

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

231120030 is a wasteful number, since it uses less digits than its factorization.

231120030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065.

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

The square root of 231120030 is about 15202.6323378552. The cubic root of 231120030 is about 613.6854996145.

Adding to 231120030 its reverse (30021132), we get a palindrome (261141162).

The spelling of 231120030 in words is "two hundred thirty-one million, one hundred twenty thousand, thirty".