31250132 has 12 divisors (see below), whose sum is σ = 55437396. Its totient is φ = 15410880.

The previous prime is 31250129. The next prime is 31250137. The reversal of 31250132 is 23105213.

It can be written as a sum of positive squares in 2 ways, for example, as 7474756 + 23775376 = 2734^2 + 4876^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31250132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31250137) 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, 53219 + ... + 53802.

It is an arithmetic number, because the mean of its divisors is an integer number (4619783).

Almost surely, 2^31250132 is an apocalyptic number.

It is an amenable number.

31250132 is a deficient number, since it is larger than the sum of its proper divisors (24187264).

31250132 is a wasteful number, since it uses less digits than its factorization.

31250132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107098 (or 107096 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 31250132 is about 5590.1817501759. The cubic root of 31250132 is about 314.9807059653.

Adding to 31250132 its reverse (23105213), we get a palindrome (54355345).

The spelling of 31250132 in words is "thirty-one million, two hundred fifty thousand, one hundred thirty-two".