231309030 has 16 divisors (see below), whose sum is σ = 555141744. Its totient is φ = 61682400.

The previous prime is 231308993. The next prime is 231309031. The reversal of 231309030 is 30903132.

It is a junction number, because it is equal to n+sod(n) for n = 231308988 and 231309006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231309031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3855121 + ... + 3855180.

It is an arithmetic number, because the mean of its divisors is an integer number (34696359).

Almost surely, 2^231309030 is an apocalyptic number.

231309030 is an abundant number, since it is smaller than the sum of its proper divisors (323832714).

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

231309030 is a wasteful number, since it uses less digits than its factorization.

231309030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7710311.

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 231309030 is about 15208.8470963449. The cubic root of 231309030 is about 613.8527358878.

The spelling of 231309030 in words is "two hundred thirty-one million, three hundred nine thousand, thirty".