1123020203031 has 48 divisors (see below), whose sum is σ = 1819071281664. Its totient is φ = 689647665024.

The previous prime is 1123020203029. The next prime is 1123020203047. The reversal of 1123020203031 is 1303020203211.

It is not a de Polignac number, because 1123020203031 - 2¹ = 1123020203029 is a prime.

It is a super-2 number, since 2×1123020203031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123020202995 and 1123020203013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123020203831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2697885 + ... + 3086198.

It is an arithmetic number, because the mean of its divisors is an integer number (37897318368).

Almost surely, 2^{1123020203031} is an apocalyptic number.

1123020203031 is a deficient number, since it is larger than the sum of its proper divisors (696051078633).

1123020203031 is an equidigital number, since it uses as much as digits as its factorization.

1123020203031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784162 (or 5784150 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1123020203031 its reverse (1303020203211), we get a palindrome (2426040406242).

The spelling of 1123020203031 in words is "one trillion, one hundred twenty-three billion, twenty million, two hundred three thousand, thirty-one".