2531481 has 8 divisors (see below), whose sum is σ = 3383520. Its totient is φ = 1683552.

The previous prime is 2531471. The next prime is 2531483. The reversal of 2531481 is 1841352.

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

It is not a de Polignac number, because 2531481 - 2¹⁰ = 2530457 is a prime.

It is a super-2 number, since 2×2531481² = 12816792106722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2531483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966 + ... + 2448.

It is an arithmetic number, because the mean of its divisors is an integer number (422940).

2^2531481 is an apocalyptic number.

It is an amenable number.

2531481 is a deficient number, since it is larger than the sum of its proper divisors (852039).

2531481 is a wasteful number, since it uses less digits than its factorization.

2531481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055.

The product of its digits is 960, while the sum is 24.

The square root of 2531481 is about 1591.0628523097. The cubic root of 2531481 is about 136.2881900633.

The spelling of 2531481 in words is "two million, five hundred thirty-one thousand, four hundred eighty-one".