1552231531323 has 72 divisors (see below), whose sum is σ = 2491113184560. Its totient is φ = 930593136000.

The previous prime is 1552231531307. The next prime is 1552231531369. The reversal of 1552231531323 is 3231351322551.

1552231531323 is a `hidden beast` number, since 1 + 5 + 5 + 2 + 2 + 315 + 313 + 23 = 666.

It is not a de Polignac number, because 1552231531323 - 2⁴ = 1552231531307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1552231531303) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 135170740 + ... + 135182222.

It is an arithmetic number, because the mean of its divisors is an integer number (34598794230).

Almost surely, 2^{1552231531323} is an apocalyptic number.

1552231531323 is a deficient number, since it is larger than the sum of its proper divisors (938881653237).

1552231531323 is a wasteful number, since it uses less digits than its factorization.

1552231531323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12841 (or 12827 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

Adding to 1552231531323 its reverse (3231351322551), we get a palindrome (4783582853874).

The spelling of 1552231531323 in words is "one trillion, five hundred fifty-two billion, two hundred thirty-one million, five hundred thirty-one thousand, three hundred twenty-three".