1020142323311 has 32 divisors (see below), whose sum is σ = 1124941627392. Its totient is φ = 921897456480.

The previous prime is 1020142323301. The next prime is 1020142323331. The reversal of 1020142323311 is 1133232410201.

It is a cyclic number.

It is not a de Polignac number, because 1020142323311 - 2³⁴ = 1002962454127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020142323301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73053416 + ... + 73067378.

It is an arithmetic number, because the mean of its divisors is an integer number (35154425856).

Almost surely, 2^{1020142323311} is an apocalyptic number.

1020142323311 is a deficient number, since it is larger than the sum of its proper divisors (104799304081).

1020142323311 is a wasteful number, since it uses less digits than its factorization.

1020142323311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16443.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1020142323311 its reverse (1133232410201), we get a palindrome (2153374733512).

The spelling of 1020142323311 in words is "one trillion, twenty billion, one hundred forty-two million, three hundred twenty-three thousand, three hundred eleven".