240140631 has 8 divisors (see below), whose sum is σ = 334108800. Its totient is φ = 153133112.

The previous prime is 240140629. The next prime is 240140647. The reversal of 240140631 is 136041042.

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

It is a cyclic number.

It is not a de Polignac number, because 240140631 - 2¹ = 240140629 is a prime.

It is a super-2 number, since 2×240140631² = 115335045314156322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 240140598 and 240140607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240140611) 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, 1740081 + ... + 1740218.

It is an arithmetic number, because the mean of its divisors is an integer number (41763600).

Almost surely, 2^240140631 is an apocalyptic number.

240140631 is a deficient number, since it is larger than the sum of its proper divisors (93968169).

240140631 is a wasteful number, since it uses less digits than its factorization.

240140631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480325.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 240140631 is about 15496.4715661340. The cubic root of 240140631 is about 621.5678589386.

Adding to 240140631 its reverse (136041042), we get a palindrome (376181673).

The spelling of 240140631 in words is "two hundred forty million, one hundred forty thousand, six hundred thirty-one".