1020631036155 has 32 divisors (see below), whose sum is σ = 1634491277568. Its totient is φ = 543842928000.

The previous prime is 1020631036153. The next prime is 1020631036157. The reversal of 1020631036155 is 5516301360201.

It is an interprime number because it is at equal distance from previous prime (1020631036153) and next prime (1020631036157).

It is not a de Polignac number, because 1020631036155 - 2¹ = 1020631036153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020631036151) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 101137660 + ... + 101147750.

It is an arithmetic number, because the mean of its divisors is an integer number (51077852424).

Almost surely, 2^{1020631036155} is an apocalyptic number.

1020631036155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1020631036155 is a deficient number, since it is larger than the sum of its proper divisors (613860241413).

1020631036155 is a wasteful number, since it uses less digits than its factorization.

1020631036155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15547.

The product of its (nonzero) digits is 16200, while the sum is 33.

Adding to 1020631036155 its reverse (5516301360201), we get a palindrome (6536932396356).

The spelling of 1020631036155 in words is "one trillion, twenty billion, six hundred thirty-one million, thirty-six thousand, one hundred fifty-five".