1040245831 has 2 divisors, whose sum is σ = 1040245832. Its totient is φ = 1040245830.

The previous prime is 1040245813. The next prime is 1040245841. The reversal of 1040245831 is 1385420401.

Together with previous prime (1040245813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1040245831 - 2⁵ = 1040245799 is a prime.

It is a super-2 number, since 2×1040245831² = 2164222777825761122, 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 1040245831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040245841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520122915 + 520122916.

It is an arithmetic number, because the mean of its divisors is an integer number (520122916).

Almost surely, 2^1040245831 is an apocalyptic number.

1040245831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040245831 is an equidigital number, since it uses as much as digits as its factorization.

1040245831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1040245831 is about 32252.8422158420. The cubic root of 1040245831 is about 1013.2392263739.

The spelling of 1040245831 in words is "one billion, forty million, two hundred forty-five thousand, eight hundred thirty-one".