31028965 has 8 divisors (see below), whose sum is σ = 40619808. Its totient is φ = 22566480.

The previous prime is 31028951. The next prime is 31028971. The reversal of 31028965 is 56982013.

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

It is not a de Polignac number, because 31028965 - 2¹⁵ = 30996197 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 31028965.

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, 282027 + ... + 282136.

It is an arithmetic number, because the mean of its divisors is an integer number (5077476).

Almost surely, 2^31028965 is an apocalyptic number.

It is an amenable number.

31028965 is a deficient number, since it is larger than the sum of its proper divisors (9590843).

31028965 is a wasteful number, since it uses less digits than its factorization.

31028965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564179.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 31028965 is about 5570.3648893048. The cubic root of 31028965 is about 314.2358735900.

The spelling of 31028965 in words is "thirty-one million, twenty-eight thousand, nine hundred sixty-five".