1023231340987 has 2 divisors, whose sum is σ = 1023231340988. Its totient is φ = 1023231340986.

The previous prime is 1023231340973. The next prime is 1023231341021. The reversal of 1023231340987 is 7890431323201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023231340987 is a prime.

It is a super-2 number, since 2×1023231340987² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1023231343987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511615670493 + 511615670494.

It is an arithmetic number, because the mean of its divisors is an integer number (511615670494).

Almost surely, 2^{1023231340987} is an apocalyptic number.

1023231340987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023231340987 is an equidigital number, since it uses as much as digits as its factorization.

1023231340987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 1023231340987 in words is "one trillion, twenty-three billion, two hundred thirty-one million, three hundred forty thousand, nine hundred eighty-seven".