213400431420 has 48 divisors (see below), whose sum is σ = 651841319808. Its totient is φ = 51733437760.

The previous prime is 213400431383. The next prime is 213400431427. The reversal of 213400431420 is 24134004312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213400431427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161666334 + ... + 161667653.

It is an arithmetic number, because the mean of its divisors is an integer number (13580027496).

Almost surely, 2^213400431420 is an apocalyptic number.

213400431420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213400431420 is an abundant number, since it is smaller than the sum of its proper divisors (438440888388).

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

213400431420 is a wasteful number, since it uses less digits than its factorization.

213400431420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323334010 (or 323334008 counting only the distinct ones).

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

Adding to 213400431420 its reverse (24134004312), we get a palindrome (237534435732).

The spelling of 213400431420 in words is "two hundred thirteen billion, four hundred million, four hundred thirty-one thousand, four hundred twenty".