213331525439 has 2 divisors, whose sum is σ = 213331525440. Its totient is φ = 213331525438.

The previous prime is 213331525427. The next prime is 213331525487. The reversal of 213331525439 is 934525133312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213331525439 - 2²⁴ = 213314748223 is a prime.

It is a super-2 number, since 2×213331525439² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213331525396 and 213331525405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213331525489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106665762719 + 106665762720.

It is an arithmetic number, because the mean of its divisors is an integer number (106665762720).

Almost surely, 2^213331525439 is an apocalyptic number.

213331525439 is a deficient number, since it is larger than the sum of its proper divisors (1).

213331525439 is an equidigital number, since it uses as much as digits as its factorization.

213331525439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 41.

The spelling of 213331525439 in words is "two hundred thirteen billion, three hundred thirty-one million, five hundred twenty-five thousand, four hundred thirty-nine".