1023145230434 has 4 divisors (see below), whose sum is σ = 1534717845654. Its totient is φ = 511572615216.

The previous prime is 1023145230433. The next prime is 1023145230473. The reversal of 1023145230434 is 4340325413201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 561293148025 + 461852082409 = 749195^2 + 679597^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1023145230434.

It is not an unprimeable number, because it can be changed into a prime (1023145230433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255786307607 + ... + 255786307610.

Almost surely, 2^{1023145230434} is an apocalyptic number.

1023145230434 is a deficient number, since it is larger than the sum of its proper divisors (511572615220).

1023145230434 is an equidigital number, since it uses as much as digits as its factorization.

1023145230434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511572615219.

The product of its (nonzero) digits is 34560, while the sum is 32.

The spelling of 1023145230434 in words is "one trillion, twenty-three billion, one hundred forty-five million, two hundred thirty thousand, four hundred thirty-four".