135231001145 has 4 divisors (see below), whose sum is σ = 162277201380. Its totient is φ = 108184800912.

The previous prime is 135231001127. The next prime is 135231001163. The reversal of 135231001145 is 541100132531.

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

It is an interprime number because it is at equal distance from previous prime (135231001127) and next prime (135231001163).

It can be written as a sum of positive squares in 2 ways, for example, as 98104262656 + 37126738489 = 313216^2 + 192683^2 .

It is a cyclic number.

It is not a de Polignac number, because 135231001145 - 2⁸ = 135231000889 is a prime.

It is a super-2 number, since 2×135231001145² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13523100110 + ... + 13523100119.

It is an arithmetic number, because the mean of its divisors is an integer number (40569300345).

Almost surely, 2^135231001145 is an apocalyptic number.

It is an amenable number.

135231001145 is a deficient number, since it is larger than the sum of its proper divisors (27046200235).

135231001145 is an equidigital number, since it uses as much as digits as its factorization.

135231001145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27046200234.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 135231001145 its reverse (541100132531), we get a palindrome (676331133676).

The spelling of 135231001145 in words is "one hundred thirty-five billion, two hundred thirty-one million, one thousand, one hundred forty-five".