321140243430 has 64 divisors (see below), whose sum is σ = 856423742400. Its totient is φ = 85632422400.

The previous prime is 321140243399. The next prime is 321140243461. The reversal of 321140243430 is 34342041123.

321140243430 is a `hidden beast` number, since 3 + 211 + 402 + 4 + 3 + 43 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (321140243399) and next prime (321140243461).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 321140243394 and 321140243403.

It is a congruent 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, 8729916 + ... + 8766624.

It is an arithmetic number, because the mean of its divisors is an integer number (13381620975).

Almost surely, 2^321140243430 is an apocalyptic number.

321140243430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

321140243430 is an abundant number, since it is smaller than the sum of its proper divisors (535283498970).

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

321140243430 is a wasteful number, since it uses less digits than its factorization.

321140243430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69126 (or 69120 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 321140243430 its reverse (34342041123), we get a palindrome (355482284553).

The spelling of 321140243430 in words is "three hundred twenty-one billion, one hundred forty million, two hundred forty-three thousand, four hundred thirty".