31325045 has 6 divisors (see below), whose sum is σ = 37605078. Its totient is φ = 25050024.

The previous prime is 31324991. The next prime is 31325071. The reversal of 31325045 is 54052313.

It can be written as a sum of positive squares in only one way, i.e., 25060036 + 6265009 = 5006^2 + 2503^2 .

It is not a de Polignac number, because 31325045 - 2⁶ = 31324981 is a prime.

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 31325045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11264 + ... + 13766.

It is an arithmetic number, because the mean of its divisors is an integer number (6267513).

Almost surely, 2^31325045 is an apocalyptic number.

It is an amenable number.

31325045 is a deficient number, since it is larger than the sum of its proper divisors (6280033).

31325045 is an frugal number, since it uses more digits than its factorization.

31325045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5011 (or 2508 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 31325045 is about 5596.8781476820. The cubic root of 31325045 is about 315.2321963137.

Adding to 31325045 its reverse (54052313), we get a palindrome (85377358).

The spelling of 31325045 in words is "thirty-one million, three hundred twenty-five thousand, forty-five".