31031045 has 8 divisors (see below), whose sum is σ = 38029824. Its totient is φ = 24296464.

The previous prime is 31031029. The next prime is 31031051. The reversal of 31031045 is 54013013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31031045 - 2⁴ = 31031029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65789 + ... + 66258.

It is an arithmetic number, because the mean of its divisors is an integer number (4753728).

Almost surely, 2^31031045 is an apocalyptic number.

It is an amenable number.

31031045 is a deficient number, since it is larger than the sum of its proper divisors (6998779).

31031045 is a wasteful number, since it uses less digits than its factorization.

31031045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132099.

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

The square root of 31031045 is about 5570.5515884874. The cubic root of 31031045 is about 314.2428949437.

Adding to 31031045 its reverse (54013013), we get a palindrome (85044058).

The spelling of 31031045 in words is "thirty-one million, thirty-one thousand, forty-five".