135211150031 has 4 divisors (see below), whose sum is σ = 139572800064. Its totient is φ = 130849500000.

The previous prime is 135211149991. The next prime is 135211150069. The reversal of 135211150031 is 130051112531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135211150031 is a prime.

It is a super-2 number, since 2×135211150031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135211149979 and 135211150006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135211150831) 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, 2180824970 + ... + 2180825031.

It is an arithmetic number, because the mean of its divisors is an integer number (34893200016).

Almost surely, 2^135211150031 is an apocalyptic number.

135211150031 is a deficient number, since it is larger than the sum of its proper divisors (4361650033).

135211150031 is an equidigital number, since it uses as much as digits as its factorization.

135211150031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4361650032.

The product of its (nonzero) digits is 450, while the sum is 23.

Adding to 135211150031 its reverse (130051112531), we get a palindrome (265262262562).

The spelling of 135211150031 in words is "one hundred thirty-five billion, two hundred eleven million, one hundred fifty thousand, thirty-one".