1131020003123 has 32 divisors (see below), whose sum is σ = 1223921664000. Its totient is φ = 1041283482624.

The previous prime is 1131020003081. The next prime is 1131020003131. The reversal of 1131020003123 is 3213000201311.

It is a cyclic number.

It is not a de Polignac number, because 1131020003123 - 2⁶ = 1131020003059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (1131020003023) 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, 243280103 + ... + 243284751.

It is an arithmetic number, because the mean of its divisors is an integer number (38247552000).

Almost surely, 2^{1131020003123} is an apocalyptic number.

1131020003123 is a deficient number, since it is larger than the sum of its proper divisors (92901660877).

1131020003123 is a wasteful number, since it uses less digits than its factorization.

1131020003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6179.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1131020003123 its reverse (3213000201311), we get a palindrome (4344020204434).

The spelling of 1131020003123 in words is "one trillion, one hundred thirty-one billion, twenty million, three thousand, one hundred twenty-three".