1023421331534 has 16 divisors (see below), whose sum is σ = 1754539356768. Its totient is φ = 438583444992.

The previous prime is 1023421331501. The next prime is 1023421331551. The reversal of 1023421331534 is 4351331243201.

It is a self number, because there is not a number n which added to its sum of digits gives 1023421331534.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1892939 + ... + 2372774.

It is an arithmetic number, because the mean of its divisors is an integer number (109658709798).

Almost surely, 2^{1023421331534} is an apocalyptic number.

1023421331534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1023421331534 is a deficient number, since it is larger than the sum of its proper divisors (731118025234).

1023421331534 is a wasteful number, since it uses less digits than its factorization.

1023421331534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4282859.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 1023421331534 its reverse (4351331243201), we get a palindrome (5374752574735).

The spelling of 1023421331534 in words is "one trillion, twenty-three billion, four hundred twenty-one million, three hundred thirty-one thousand, five hundred thirty-four".