213012400344 has 16 divisors (see below), whose sum is σ = 532531000920. Its totient is φ = 71004133440.

The previous prime is 213012400339. The next prime is 213012400361. The reversal of 213012400344 is 443004210312.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 8875516681 = 213012400344 / (2 + 1 + 3 + 0 + 1 + 2 + 4 + 0 + 0 + 3 + 4 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4437758317 + ... + 4437758364.

Almost surely, 2^213012400344 is an apocalyptic number.

213012400344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213012400344 is an abundant number, since it is smaller than the sum of its proper divisors (319518600576).

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

213012400344 is a wasteful number, since it uses less digits than its factorization.

213012400344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8875516690 (or 8875516686 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 213012400344 its reverse (443004210312), we get a palindrome (656016610656).

The spelling of 213012400344 in words is "two hundred thirteen billion, twelve million, four hundred thousand, three hundred forty-four".