231002100 has 216 divisors, whose sum is σ = 850723328. Its totient is φ = 51321600.

The previous prime is 231002071. The next prime is 231002113. The reversal of 231002100 is 1200132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 232605 + ... + 233595.

Almost surely, 2^231002100 is an apocalyptic number.

231002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231002100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425361664).

231002100 is an abundant number, since it is smaller than the sum of its proper divisors (619721228).

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

231002100 is a wasteful number, since it uses less digits than its factorization.

231002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055 (or 1045 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 231002100 is about 15198.7532383416. The cubic root of 231002100 is about 613.5811032916.

Adding to 231002100 its reverse (1200132), we get a palindrome (232202232).

It can be divided in two parts, 23100 and 2100, that added together give a triangular number (25200 = T₂₂₄).

The spelling of 231002100 in words is "two hundred thirty-one million, two thousand, one hundred".