2400631 has 4 divisors (see below), whose sum is σ = 2527000. Its totient is φ = 2274264.

The previous prime is 2400623. The next prime is 2400661. The reversal of 2400631 is 1360042.

2400631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2400631 - 2³ = 2400623 is a prime.

It is a super-2 number, since 2×2400631² = 11526058396322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63156 + ... + 63193.

It is an arithmetic number, because the mean of its divisors is an integer number (631750).

2^2400631 is an apocalyptic number.

2400631 is a deficient number, since it is larger than the sum of its proper divisors (126369).

2400631 is a wasteful number, since it uses less digits than its factorization.

2400631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126368.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2400631 is about 1549.3969794730. The cubic root of 2400631 is about 133.8983226602.

Adding to 2400631 its reverse (1360042), we get a palindrome (3760673).

The spelling of 2400631 in words is "two million, four hundred thousand, six hundred thirty-one".