231520001545552 has 10 divisors (see below), whose sum is σ = 448570002994538. Its totient is φ = 115760000772768.

The previous prime is 231520001545529. The next prime is 231520001545577. The reversal of 231520001545552 is 255545100025132.

It can be written as a sum of positive squares in only one way, i.e., 187961796727056 + 43558204818496 = 13709916^2 + 6599864^2 .

It is a super-2 number, since 2×231520001545552² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 7235000048283 + ... + 7235000048314.

Almost surely, 2^{231520001545552} is an apocalyptic number.

It is an amenable number.

231520001545552 is a deficient number, since it is larger than the sum of its proper divisors (217050001448986).

231520001545552 is a wasteful number, since it uses less digits than its factorization.

231520001545552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14470000096605 (or 14470000096599 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 40.

The spelling of 231520001545552 in words is "two hundred thirty-one trillion, five hundred twenty billion, one million, five hundred forty-five thousand, five hundred fifty-two".