1131020023 has 8 divisors (see below), whose sum is σ = 1294198560. Its totient is φ = 968242560.

The previous prime is 1131020021. The next prime is 1131020041. The reversal of 1131020023 is 3200201311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131020023 - 2¹ = 1131020021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131019985 and 1131020012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131020021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94198 + ... + 105523.

It is an arithmetic number, because the mean of its divisors is an integer number (161774820).

Almost surely, 2^1131020023 is an apocalyptic number.

1131020023 is a deficient number, since it is larger than the sum of its proper divisors (163178537).

1131020023 is an equidigital number, since it uses as much as digits as its factorization.

1131020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200537.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1131020023 is about 33630.6411327527. The cubic root of 1131020023 is about 1041.8937460040.

Adding to 1131020023 its reverse (3200201311), we get a palindrome (4331221334).

The spelling of 1131020023 in words is "one billion, one hundred thirty-one million, twenty thousand, twenty-three".