15531234023 has 2 divisors, whose sum is σ = 15531234024. Its totient is φ = 15531234022.

The previous prime is 15531234013. The next prime is 15531234031. The reversal of 15531234023 is 32043213551.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15531234023 - 2¹⁰ = 15531232999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15531234013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7765617011 + 7765617012.

It is an arithmetic number, because the mean of its divisors is an integer number (7765617012).

Almost surely, 2^15531234023 is an apocalyptic number.

15531234023 is a deficient number, since it is larger than the sum of its proper divisors (1).

15531234023 is an equidigital number, since it uses as much as digits as its factorization.

15531234023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 15531234023 its reverse (32043213551), we get a palindrome (47574447574).

The spelling of 15531234023 in words is "fifteen billion, five hundred thirty-one million, two hundred thirty-four thousand, twenty-three".