31128863356053 has 20 divisors (see below), whose sum is σ = 46620681813420. Its totient is φ = 20699227026432.

The previous prime is 31128863356051. The next prime is 31128863356103. The reversal of 31128863356053 is 35065336882113.

31128863356053 is a `hidden beast` number, since 3 + 1 + 1 + 28 + 8 + 6 + 3 + 3 + 5 + 605 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15617727013329 + 15511136342724 = 3951927^2 + 3938418^2 .

It is not a de Polignac number, because 31128863356053 - 2¹ = 31128863356051 is a prime.

It is a super-2 number, since 2×31128863356053² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31128863356051) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 493936300 + ... + 493999317.

It is an arithmetic number, because the mean of its divisors is an integer number (2331034090671).

Almost surely, 2^{31128863356053} is an apocalyptic number.

It is an amenable number.

31128863356053 is a deficient number, since it is larger than the sum of its proper divisors (15491818457367).

31128863356053 is an equidigital number, since it uses as much as digits as its factorization.

31128863356053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987936018 (or 987936009 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 31128863356053 in words is "thirty-one trillion, one hundred twenty-eight billion, eight hundred sixty-three million, three hundred fifty-six thousand, fifty-three".