249017431 has 8 divisors (see below), whose sum is σ = 268675904. Its totient is φ = 229430880.

The previous prime is 249017413. The next prime is 249017441. The reversal of 249017431 is 134710942.

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 249017431 - 2⁵ = 249017399 is a prime.

It is a super-2 number, since 2×249017431² = 124019361883679522, 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 = 249017393 and 249017402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249017441) 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, 10671 + ... + 24736.

It is an arithmetic number, because the mean of its divisors is an integer number (33584488).

Almost surely, 2^249017431 is an apocalyptic number.

249017431 is a deficient number, since it is larger than the sum of its proper divisors (19658473).

249017431 is a wasteful number, since it uses less digits than its factorization.

249017431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35961.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 249017431 is about 15780.2861507642. The cubic root of 249017431 is about 629.1341351092.

The spelling of 249017431 in words is "two hundred forty-nine million, seventeen thousand, four hundred thirty-one".