31741225 has 12 divisors (see below), whose sum is σ = 40717260. Its totient is φ = 24516800.

The previous prime is 31741217. The next prime is 31741247. The reversal of 31741225 is 52214713.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1447209 + 30294016 = 1203^2 + 5504^2 .

It is not a de Polignac number, because 31741225 - 2³ = 31741217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 31741225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21166 + ... + 22615.

It is an arithmetic number, because the mean of its divisors is an integer number (3393105).

Almost surely, 2^31741225 is an apocalyptic number.

It is an amenable number.

31741225 is a deficient number, since it is larger than the sum of its proper divisors (8976035).

31741225 is a wasteful number, since it uses less digits than its factorization.

31741225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43820 (or 43815 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 31741225 is about 5633.9351256471. The cubic root of 31741225 is about 316.6221020697.

Adding to 31741225 its reverse (52214713), we get a palindrome (83955938).

The spelling of 31741225 in words is "thirty-one million, seven hundred forty-one thousand, two hundred twenty-five".