2231257705528 has 16 divisors (see below), whose sum is σ = 4208659746480. Its totient is φ = 1108948439808.

The previous prime is 2231257705493. The next prime is 2231257705529. The reversal of 2231257705528 is 8255077521322.

It is a happy number.

It is a super-3 number, since 3×2231257705528³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231257705529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 835050201 + ... + 835052872.

It is an arithmetic number, because the mean of its divisors is an integer number (263041234155).

Almost surely, 2^{2231257705528} is an apocalyptic number.

It is an amenable number.

2231257705528 is a deficient number, since it is larger than the sum of its proper divisors (1977402040952).

2231257705528 is a wasteful number, since it uses less digits than its factorization.

2231257705528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670103246 (or 1670103242 counting only the distinct ones).

The product of its (nonzero) digits is 2352000, while the sum is 49.

The spelling of 2231257705528 in words is "two trillion, two hundred thirty-one billion, two hundred fifty-seven million, seven hundred five thousand, five hundred twenty-eight".