31225036 has 12 divisors (see below), whose sum is σ = 55011600. Its totient is φ = 15507440.

The previous prime is 31225031. The next prime is 31225049. The reversal of 31225036 is 63052213.

It is a super-3 number, since 3×31225036³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31224998 and 31225016.

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, 25600 + ... + 26791.

It is an arithmetic number, because the mean of its divisors is an integer number (4584300).

Almost surely, 2^31225036 is an apocalyptic number.

It is an amenable number.

31225036 is a deficient number, since it is larger than the sum of its proper divisors (23786564).

31225036 is a wasteful number, since it uses less digits than its factorization.

31225036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52544 (or 52542 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 31225036 is about 5587.9366496051. The cubic root of 31225036 is about 314.8963663454.

Adding to 31225036 its reverse (63052213), we get a palindrome (94277249).

The spelling of 31225036 in words is "thirty-one million, two hundred twenty-five thousand, thirty-six".