135311172 has 24 divisors (see below), whose sum is σ = 318523296. Its totient is φ = 44704128.

The previous prime is 135311159. The next prime is 135311191. The reversal of 135311172 is 271113531.

It is a happy number.

It is a super-2 number, since 2×135311172² = 36618226536027168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48538 + ... + 51249.

It is an arithmetic number, because the mean of its divisors is an integer number (13271804).

Almost surely, 2^135311172 is an apocalyptic number.

135311172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135311172 is an abundant number, since it is smaller than the sum of its proper divisors (183212124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135311172 is a wasteful number, since it uses less digits than its factorization.

135311172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99907 (or 99905 counting only the distinct ones).

The product of its digits is 630, while the sum is 24.

The square root of 135311172 is about 11632.3330419998. Note that the first 3 decimals coincide. The cubic root of 135311172 is about 513.3866272136.

The spelling of 135311172 in words is "one hundred thirty-five million, three hundred eleven thousand, one hundred seventy-two".