135212345431 has 8 divisors (see below), whose sum is σ = 135296399520. Its totient is φ = 135128323968.

The previous prime is 135212345419. The next prime is 135212345497. The reversal of 135212345431 is 134543212531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135212345431 - 2¹⁷ = 135212214359 is a prime.

It is a super-2 number, since 2×135212345431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135212345131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17841315 + ... + 17848891.

It is an arithmetic number, because the mean of its divisors is an integer number (16912049940).

Almost surely, 2^135212345431 is an apocalyptic number.

135212345431 is a deficient number, since it is larger than the sum of its proper divisors (84054089).

135212345431 is an equidigital number, since it uses as much as digits as its factorization.

135212345431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16313.

The product of its digits is 43200, while the sum is 34.

Adding to 135212345431 its reverse (134543212531), we get a palindrome (269755557962).

The spelling of 135212345431 in words is "one hundred thirty-five billion, two hundred twelve million, three hundred forty-five thousand, four hundred thirty-one".