1020131255188 has 24 divisors (see below), whose sum is σ = 1810148231808. Its totient is φ = 502949624256.

The previous prime is 1020131255173. The next prime is 1020131255189. The reversal of 1020131255188 is 8815521310201.

1020131255188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×1020131255188³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020131255189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700245 + ... + 1590787.

It is an arithmetic number, because the mean of its divisors is an integer number (75422842992).

Almost surely, 2^{1020131255188} is an apocalyptic number.

It is an amenable number.

1020131255188 is a deficient number, since it is larger than the sum of its proper divisors (790016976620).

1020131255188 is a wasteful number, since it uses less digits than its factorization.

1020131255188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894543 (or 894541 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 37.

Adding to 1020131255188 its reverse (8815521310201), we get a palindrome (9835652565389).

The spelling of 1020131255188 in words is "one trillion, twenty billion, one hundred thirty-one million, two hundred fifty-five thousand, one hundred eighty-eight".