231375630 has 128 divisors (see below), whose sum is σ = 620421120. Its totient is φ = 54996480.

The previous prime is 231375629. The next prime is 231375631. The reversal of 231375630 is 36573132.

It is an interprime number because it is at equal distance from previous prime (231375629) and next prime (231375631).

It is a super-3 number, since 3×231375630³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231375631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 620124 + ... + 620496.

It is an arithmetic number, because the mean of its divisors is an integer number (4847040).

Almost surely, 2^231375630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231375630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310210560).

231375630 is an abundant number, since it is smaller than the sum of its proper divisors (389045490).

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

231375630 is a wasteful number, since it uses less digits than its factorization.

231375630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466.

The product of its (nonzero) digits is 11340, while the sum is 30.

The square root of 231375630 is about 15211.0364538384. The cubic root of 231375630 is about 613.9116450581.

The spelling of 231375630 in words is "two hundred thirty-one million, three hundred seventy-five thousand, six hundred thirty".