1023231331542 has 64 divisors (see below), whose sum is σ = 2513352983040. Its totient is φ = 271047845376.

The previous prime is 1023231331519. The next prime is 1023231331553. The reversal of 1023231331542 is 2451331323201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10646917 + ... + 10742592.

It is an arithmetic number, because the mean of its divisors is an integer number (39271140360).

Almost surely, 2^{1023231331542} is an apocalyptic number.

1023231331542 is an abundant number, since it is smaller than the sum of its proper divisors (1490121651498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023231331542 is a wasteful number, since it uses less digits than its factorization.

1023231331542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21389605.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 1023231331542 its reverse (2451331323201), we get a palindrome (3474562654743).

The spelling of 1023231331542 in words is "one trillion, twenty-three billion, two hundred thirty-one million, three hundred thirty-one thousand, five hundred forty-two".