1531322023 has 16 divisors (see below), whose sum is σ = 1919091456. Its totient is φ = 1187043840.

The previous prime is 1531321999. The next prime is 1531322027. The reversal of 1531322023 is 3202231351.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1531322023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1531321985 and 1531322003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531322027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36661 + ... + 66382.

It is an arithmetic number, because the mean of its divisors is an integer number (119943216).

Almost surely, 2^1531322023 is an apocalyptic number.

1531322023 is a deficient number, since it is larger than the sum of its proper divisors (387769433).

1531322023 is a wasteful number, since it uses less digits than its factorization.

1531322023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103254.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1531322023 is about 39132.1098715620. The cubic root of 1531322023 is about 1152.6271438852.

Adding to 1531322023 its reverse (3202231351), we get a palindrome (4733553374).

The spelling of 1531322023 in words is "one billion, five hundred thirty-one million, three hundred twenty-two thousand, twenty-three".