240506431 has 8 divisors (see below), whose sum is σ = 262483200. Its totient is φ = 218548440.

The previous prime is 240506407. The next prime is 240506449. The reversal of 240506431 is 134605042.

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

It is not a de Polignac number, because 240506431 - 2⁷ = 240506303 is a prime.

It is a super-2 number, since 2×240506431² = 115686686704715522, 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 = 240506396 and 240506405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240506491) 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, 45210 + ... + 50248.

It is an arithmetic number, because the mean of its divisors is an integer number (32810400).

Almost surely, 2^240506431 is an apocalyptic number.

240506431 is a deficient number, since it is larger than the sum of its proper divisors (21976769).

240506431 is a wasteful number, since it uses less digits than its factorization.

240506431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9389.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 240506431 is about 15508.2697616465. The cubic root of 240506431 is about 621.8833048932.

The spelling of 240506431 in words is "two hundred forty million, five hundred six thousand, four hundred thirty-one".