2309631 has 8 divisors (see below), whose sum is σ = 3096240. Its totient is φ = 1531392.

The previous prime is 2309609. The next prime is 2309633. The reversal of 2309631 is 1369032.

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

It is not a de Polignac number, because 2309631 - 2²¹ = 212479 is a prime.

It is a super-2 number, since 2×2309631² = 10668790712322, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2309633) 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, 1416 + ... + 2573.

It is an arithmetic number, because the mean of its divisors is an integer number (387030).

2^2309631 is an apocalyptic number.

2309631 is a deficient number, since it is larger than the sum of its proper divisors (786609).

2309631 is a wasteful number, since it uses less digits than its factorization.

2309631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4185.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 2309631 is about 1519.7470184212. The cubic root of 2309631 is about 132.1846016779.

The spelling of 2309631 in words is "two million, three hundred nine thousand, six hundred thirty-one".