240551431 has 8 divisors (see below), whose sum is σ = 241827984. Its totient is φ = 239279040.

The previous prime is 240551383. The next prime is 240551449. The reversal of 240551431 is 134155042.

It is a happy number.

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 240551431 - 2⁷ = 240551303 is a prime.

It is a super-2 number, since 2×240551431² = 115729981912295522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240551396 and 240551405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240551461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206256 + ... + 207418.

It is an arithmetic number, because the mean of its divisors is an integer number (30228498).

Almost surely, 2^240551431 is an apocalyptic number.

240551431 is a deficient number, since it is larger than the sum of its proper divisors (1276553).

240551431 is a wasteful number, since it uses less digits than its factorization.

240551431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 240551431 is about 15509.7205326208. The cubic root of 240551431 is about 621.9220883378.

The spelling of 240551431 in words is "two hundred forty million, five hundred fifty-one thousand, four hundred thirty-one".