172113412 has 12 divisors (see below), whose sum is σ = 304123456. Its totient is φ = 85221000.

The previous prime is 172113401. The next prime is 172113413. The reversal of 172113412 is 214311271.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (172113413) 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, 208464 + ... + 209287.

Almost surely, 2^172113412 is an apocalyptic number.

It is an amenable number.

172113412 is a deficient number, since it is larger than the sum of its proper divisors (132010044).

172113412 is a wasteful number, since it uses less digits than its factorization.

172113412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417858 (or 417856 counting only the distinct ones).

The product of its digits is 336, while the sum is 22.

The square root of 172113412 is about 13119.2001280566. The cubic root of 172113412 is about 556.2519819481.

Adding to 172113412 its reverse (214311271), we get a palindrome (386424683).

The spelling of 172113412 in words is "one hundred seventy-two million, one hundred thirteen thousand, four hundred twelve".