1320040023 has 16 divisors (see below), whose sum is σ = 1787385600. Its totient is φ = 866396160.

The previous prime is 1320040019. The next prime is 1320040039. The reversal of 1320040023 is 3200400231.

It is not a de Polignac number, because 1320040023 - 2² = 1320040019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1320039984 and 1320040011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320040013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159768 + ... + 167826.

It is an arithmetic number, because the mean of its divisors is an integer number (111711600).

Almost surely, 2^1320040023 is an apocalyptic number.

1320040023 is a deficient number, since it is larger than the sum of its proper divisors (467345577).

1320040023 is an equidigital number, since it uses as much as digits as its factorization.

1320040023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8902.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1320040023 is about 36332.3550434045. The cubic root of 1320040023 is about 1096.9723971630.

Adding to 1320040023 its reverse (3200400231), we get a palindrome (4520440254).

The spelling of 1320040023 in words is "one billion, three hundred twenty million, forty thousand, twenty-three".