249970031 has 8 divisors (see below), whose sum is σ = 253674960. Its totient is φ = 246272832.

The previous prime is 249970001. The next prime is 249970043. The reversal of 249970031 is 130079942.

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 249970031 - 2²² = 245775727 is a prime.

It is a super-2 number, since 2×249970031² = 124970032796281922, 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 = 249969973 and 249970000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249970001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107105 + ... + 109413.

It is an arithmetic number, because the mean of its divisors is an integer number (31709370).

Almost surely, 2^249970031 is an apocalyptic number.

249970031 is a deficient number, since it is larger than the sum of its proper divisors (3704929).

249970031 is a wasteful number, since it uses less digits than its factorization.

249970031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3865.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 249970031 is about 15810.4405694465. The cubic root of 249970031 is about 629.9353515589.

The spelling of 249970031 in words is "two hundred forty-nine million, nine hundred seventy thousand, thirty-one".