1002309431 has 2 divisors, whose sum is σ = 1002309432. Its totient is φ = 1002309430.

The previous prime is 1002309421. The next prime is 1002309437. The reversal of 1002309431 is 1349032001.

It is a strong prime.

It is an emirp because it is prime and its reverse (1349032001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002309431 - 2¹⁰ = 1002308407 is a prime.

It is a super-2 number, since 2×1002309431² = 2009248390943087522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1002309397 and 1002309406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002309437) 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, 501154715 + 501154716.

It is an arithmetic number, because the mean of its divisors is an integer number (501154716).

Almost surely, 2^1002309431 is an apocalyptic number.

1002309431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002309431 is an equidigital number, since it uses as much as digits as its factorization.

1002309431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1002309431 is about 31659.2708538905. The cubic root of 1002309431 is about 1000.7692184845.

The spelling of 1002309431 in words is "one billion, two million, three hundred nine thousand, four hundred thirty-one".