247042031 has 2 divisors, whose sum is σ = 247042032. Its totient is φ = 247042030.

The previous prime is 247041989. The next prime is 247042067. The reversal of 247042031 is 130240742.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 247042031 - 2⁶ = 247041967 is a prime.

It is a super-2 number, since 2×247042031² = 122059530161209922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 247041988 and 247042006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247032031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123521015 + 123521016.

It is an arithmetic number, because the mean of its divisors is an integer number (123521016).

Almost surely, 2^247042031 is an apocalyptic number.

247042031 is a deficient number, since it is larger than the sum of its proper divisors (1).

247042031 is an equidigital number, since it uses as much as digits as its factorization.

247042031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 247042031 is about 15717.5707728644. The cubic root of 247042031 is about 627.4661228358.

Adding to 247042031 its reverse (130240742), we get a palindrome (377282773).

The spelling of 247042031 in words is "two hundred forty-seven million, forty-two thousand, thirty-one".