213450423361 has 24 divisors (see below), whose sum is σ = 252484252416. Its totient is φ = 179888063040.

The previous prime is 213450423353. The next prime is 213450423377. The reversal of 213450423361 is 163324054312.

It is a happy number.

It is not a de Polignac number, because 213450423361 - 2³ = 213450423353 is a prime.

It is a super-2 number, since 2×213450423361² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213450423311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1193205 + ... + 1360381.

It is an arithmetic number, because the mean of its divisors is an integer number (10520177184).

Almost surely, 2^213450423361 is an apocalyptic number.

It is an amenable number.

213450423361 is a deficient number, since it is larger than the sum of its proper divisors (39033829055).

213450423361 is a wasteful number, since it uses less digits than its factorization.

213450423361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167629 (or 167622 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 213450423361 its reverse (163324054312), we get a palindrome (376774477673).

The spelling of 213450423361 in words is "two hundred thirteen billion, four hundred fifty million, four hundred twenty-three thousand, three hundred sixty-one".