2923281 has 6 divisors (see below), whose sum is σ = 4222530. Its totient is φ = 1948848.

The previous prime is 2923279. The next prime is 2923313. The reversal of 2923281 is 1823292.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2692881 + 230400 = 1641^2 + 480^2 .

It is not a de Polignac number, because 2923281 - 2¹ = 2923279 is a prime.

It is a super-2 number, since 2×2923281² = 17091143609922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2923211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 162396 + ... + 162413.

It is an arithmetic number, because the mean of its divisors is an integer number (703755).

2^2923281 is an apocalyptic number.

It is an amenable number.

2923281 is a deficient number, since it is larger than the sum of its proper divisors (1299249).

2923281 is a wasteful number, since it uses less digits than its factorization.

2923281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324815 (or 324812 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2923281 is about 1709.7605095451. The cubic root of 2923281 is about 142.9849039438.

The spelling of 2923281 in words is "two million, nine hundred twenty-three thousand, two hundred eighty-one".