31045425 has 24 divisors (see below), whose sum is σ = 51916320. Its totient is φ = 16368000.

The previous prime is 31045409. The next prime is 31045429. The reversal of 31045425 is 52454013.

It is not a de Polignac number, because 31045425 - 2⁴ = 31045409 is a prime.

It is a super-3 number, since 3×31045425³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31045395 and 31045404.

It is not an unprimeable number, because it can be changed into a prime (31045429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4350 + ... + 9000.

It is an arithmetic number, because the mean of its divisors is an integer number (2163180).

Almost surely, 2^31045425 is an apocalyptic number.

It is an amenable number.

31045425 is a deficient number, since it is larger than the sum of its proper divisors (20870895).

31045425 is a wasteful number, since it uses less digits than its factorization.

31045425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4753 (or 4748 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 31045425 is about 5571.8421549789. The cubic root of 31045425 is about 314.2914282216.

Adding to 31045425 its reverse (52454013), we get a palindrome (83499438).

The spelling of 31045425 in words is "thirty-one million, forty-five thousand, four hundred twenty-five".