2491002431 has 2 divisors, whose sum is σ = 2491002432. Its totient is φ = 2491002430.

The previous prime is 2491002403. The next prime is 2491002439. The reversal of 2491002431 is 1342001942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2491002431 - 2²⁶ = 2423893567 is a prime.

It is a super-2 number, since 2×2491002431² = 12410186222495819522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2491002431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2491002439) 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 as a sum of consecutive naturals, namely, 1245501215 + 1245501216.

It is an arithmetic number, because the mean of its divisors is an integer number (1245501216).

Almost surely, 2^2491002431 is an apocalyptic number.

2491002431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491002431 is an equidigital number, since it uses as much as digits as its factorization.

2491002431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2491002431 is about 49909.9432077417. The cubic root of 2491002431 is about 1355.5786404041.

The spelling of 2491002431 in words is "two billion, four hundred ninety-one million, two thousand, four hundred thirty-one".