213431203320 has 32 divisors (see below), whose sum is σ = 640293610320. Its totient is φ = 56914987520.

The previous prime is 213431203303. The next prime is 213431203333. The reversal of 213431203320 is 23302134312.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889296561 + ... + 889296800.

Almost surely, 2^213431203320 is an apocalyptic number.

213431203320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213431203320 is an abundant number, since it is smaller than the sum of its proper divisors (426862407000).

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

213431203320 is a wasteful number, since it uses less digits than its factorization.

213431203320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778593375 (or 1778593371 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 213431203320 its reverse (23302134312), we get a palindrome (236733337632).

The spelling of 213431203320 in words is "two hundred thirteen billion, four hundred thirty-one million, two hundred three thousand, three hundred twenty".