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31225034 = 218186257
BaseRepresentation
bin111011100011…
…1010011001010
32011202101200202
41313013103022
530443200114
63033132202
7526260041
oct167072312
964671622
1031225034
1116697915
12a55a062
136613769
14420b558
152b1bcde
hex1dc74ca

31225034 has 8 divisors (see below), whose sum is σ = 47096868. Its totient is φ = 15526080.

The previous prime is 31225031. The next prime is 31225049. The reversal of 31225034 is 43052213.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18515809 + 12709225 = 4303^2 + 3565^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×312250343 (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31224997 and 31225015.

It is not an unprimeable number, because it can be changed into a prime (31225031) 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, 42767 + ... + 43490.

Almost surely, 231225034 is an apocalyptic number.

31225034 is a deficient number, since it is larger than the sum of its proper divisors (15871834).

31225034 is a wasteful number, since it uses less digits than its factorization.

31225034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86440.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 31225034 is about 5587.9364706482. The cubic root of 31225034 is about 314.8963596223.

Adding to 31225034 its reverse (43052213), we get a palindrome (74277247).

The spelling of 31225034 in words is "thirty-one million, two hundred twenty-five thousand, thirty-four".

Divisors: 1 2 181 362 86257 172514 15612517 31225034