213434120331 has 12 divisors (see below), whose sum is σ = 308576322600. Its totient is φ = 142158985920.

The previous prime is 213434120321. The next prime is 213434120351. The reversal of 213434120331 is 133021434312.

It is a happy number.

213434120331 is a `hidden beast` number, since 21 + 3 + 434 + 1 + 203 + 3 + 1 = 666.

It is not a de Polignac number, because 213434120331 - 2¹⁵ = 213434087563 is a prime.

It is a super-2 number, since 2×213434120331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213434120295 and 213434120304.

It is not an unprimeable number, because it can be changed into a prime (213434120321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10858606 + ... + 10878243.

It is an arithmetic number, because the mean of its divisors is an integer number (25714693550).

Almost surely, 2^213434120331 is an apocalyptic number.

213434120331 is a deficient number, since it is larger than the sum of its proper divisors (95142202269).

213434120331 is a wasteful number, since it uses less digits than its factorization.

213434120331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21737946 (or 21737943 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 213434120331 its reverse (133021434312), we get a palindrome (346455554643).

The spelling of 213434120331 in words is "two hundred thirteen billion, four hundred thirty-four million, one hundred twenty thousand, three hundred thirty-one".