5111302155531 has 32 divisors (see below), whose sum is σ = 8116193605632. Its totient is φ = 2820298901760.

The previous prime is 5111302155529. The next prime is 5111302155539. The reversal of 5111302155531 is 1355512031115.

It is not a de Polignac number, because 5111302155531 - 2¹ = 5111302155529 is a prime.

It is a super-2 number, since 2×5111302155531² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 5111302155492 and 5111302155501.

It is not an unprimeable number, because it can be changed into a prime (5111302155539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81574555 + ... + 81637188.

It is an arithmetic number, because the mean of its divisors is an integer number (253631050176).

Almost surely, 2^{5111302155531} is an apocalyptic number.

5111302155531 is a deficient number, since it is larger than the sum of its proper divisors (3004891450101).

5111302155531 is a wasteful number, since it uses less digits than its factorization.

5111302155531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163211843.

The product of its (nonzero) digits is 11250, while the sum is 33.

Adding to 5111302155531 its reverse (1355512031115), we get a palindrome (6466814186646).

The spelling of 5111302155531 in words is "five trillion, one hundred eleven billion, three hundred two million, one hundred fifty-five thousand, five hundred thirty-one".