249423713731 has 2 divisors, whose sum is σ = 249423713732. Its totient is φ = 249423713730.

The previous prime is 249423713681. The next prime is 249423713743. The reversal of 249423713731 is 137317324942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249423713731 - 2⁷ = 249423713603 is a prime.

It is a super-2 number, since 2×249423713731² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (249423413731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124711856865 + 124711856866.

It is an arithmetic number, because the mean of its divisors is an integer number (124711856866).

Almost surely, 2^249423713731 is an apocalyptic number.

249423713731 is a deficient number, since it is larger than the sum of its proper divisors (1).

249423713731 is an equidigital number, since it uses as much as digits as its factorization.

249423713731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 46.

The spelling of 249423713731 in words is "two hundred forty-nine billion, four hundred twenty-three million, seven hundred thirteen thousand, seven hundred thirty-one".