231403030 has 32 divisors (see below), whose sum is σ = 421737120. Its totient is φ = 91411200.

The previous prime is 231403021. The next prime is 231403037. The reversal of 231403030 is 30304132.

It is a junction number, because it is equal to n+sod(n) for n = 231402995 and 231403013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231403037) 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, 384730 + ... + 385330.

It is an arithmetic number, because the mean of its divisors is an integer number (13179285).

Almost surely, 2^231403030 is an apocalyptic number.

231403030 is a deficient number, since it is larger than the sum of its proper divisors (190334090).

231403030 is a wasteful number, since it uses less digits than its factorization.

231403030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 231403030 is about 15211.9370890101. The cubic root of 231403030 is about 613.9358776809.

Adding to 231403030 its reverse (30304132), we get a palindrome (261707162).

The spelling of 231403030 in words is "two hundred thirty-one million, four hundred three thousand, thirty".