31434325 has 18 divisors (see below), whose sum is σ = 42112322. Its totient is φ = 23138400.

The previous prime is 31434287. The next prime is 31434329. The reversal of 31434325 is 52343413.

It can be written as a sum of positive squares in 3 ways, for example, as 96721 + 31337604 = 311^2 + 5598^2 .

It is not a de Polignac number, because 31434325 - 2¹⁹ = 30910037 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31434325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31434329) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 100920 + ... + 101230.

Almost surely, 2^31434325 is an apocalyptic number.

It is an amenable number.

31434325 is a deficient number, since it is larger than the sum of its proper divisors (10677997).

31434325 is an equidigital number, since it uses as much as digits as its factorization.

31434325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 329 counting only the distinct ones).

The product of its digits is 4320, while the sum is 25.

The square root of 31434325 is about 5606.6322333465. The cubic root of 31434325 is about 315.5983420285.

Adding to 31434325 its reverse (52343413), we get a palindrome (83777738).

The spelling of 31434325 in words is "thirty-one million, four hundred thirty-four thousand, three hundred twenty-five".