135031205401 has 4 divisors (see below), whose sum is σ = 135215423332. Its totient is φ = 134846987472.

The previous prime is 135031205399. The next prime is 135031205417. The reversal of 135031205401 is 104502130531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74835073600 + 60196131801 = 273560^2 + 245349^2 .

It is a cyclic number.

It is not a de Polignac number, because 135031205401 - 2¹ = 135031205399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135031205801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92107866 + ... + 92109331.

It is an arithmetic number, because the mean of its divisors is an integer number (33803855833).

Almost surely, 2^135031205401 is an apocalyptic number.

It is an amenable number.

135031205401 is a deficient number, since it is larger than the sum of its proper divisors (184217931).

135031205401 is an equidigital number, since it uses as much as digits as its factorization.

135031205401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184217930.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 135031205401 its reverse (104502130531), we get a palindrome (239533335932).

The spelling of 135031205401 in words is "one hundred thirty-five billion, thirty-one million, two hundred five thousand, four hundred one".