31245104 has 30 divisors (see below), whose sum is σ = 66545220. Its totient is φ = 14201440.

The previous prime is 31245103. The next prime is 31245107. The reversal of 31245104 is 40154213.

It is not an unprimeable number, because it can be changed into a prime (31245103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6134 + ... + 10005.

It is an arithmetic number, because the mean of its divisors is an integer number (2218174).

Almost surely, 2^31245104 is an apocalyptic number.

It is an amenable number.

31245104 is an abundant number, since it is smaller than the sum of its proper divisors (35300116).

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

31245104 is a wasteful number, since it uses less digits than its factorization.

31245104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16169 (or 16152 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 31245104 is about 5589.7320150433. The cubic root of 31245104 is about 314.9638120854.

Adding to 31245104 its reverse (40154213), we get a palindrome (71399317).

It can be divided in two parts, 3124 and 5104, that added together give a palindrome (8228).

The spelling of 31245104 in words is "thirty-one million, two hundred forty-five thousand, one hundred four".