231311130 has 64 divisors (see below), whose sum is σ = 586967040. Its totient is φ = 58176576.

The previous prime is 231311107. The next prime is 231311153. The reversal of 231311130 is 31113132.

231311130 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (231311107) and next prime (231311153).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149139 + ... + 150681.

It is an arithmetic number, because the mean of its divisors is an integer number (9171360).

Almost surely, 2^231311130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231311130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293483520).

231311130 is an abundant number, since it is smaller than the sum of its proper divisors (355655910).

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

231311130 is a wasteful number, since it uses less digits than its factorization.

231311130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 231311130 is about 15208.9161349519. The cubic root of 231311130 is about 613.8545935568.

Adding to 231311130 its reverse (31113132), we get a palindrome (262424262).

The spelling of 231311130 in words is "two hundred thirty-one million, three hundred eleven thousand, one hundred thirty".