231330121210030 has 32 divisors (see below), whose sum is σ = 438310499628960. Its totient is φ = 87661781412480.

The previous prime is 231330121210007. The next prime is 231330121210031. The reversal of 231330121210030 is 30012121033132.

It is a junction number, because it is equal to n+sod(n) for n = 231330121209983 and 231330121210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231330121210031) 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, 195326412 + ... + 196507168.

It is an arithmetic number, because the mean of its divisors is an integer number (13697203113405).

Almost surely, 2^{231330121210030} is an apocalyptic number.

231330121210030 is a deficient number, since it is larger than the sum of its proper divisors (206980378418930).

231330121210030 is a wasteful number, since it uses less digits than its factorization.

231330121210030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211924.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231330121210030 its reverse (30012121033132), we get a palindrome (261342242243162).

The spelling of 231330121210030 in words is "two hundred thirty-one trillion, three hundred thirty billion, one hundred twenty-one million, two hundred ten thousand, thirty".