5311155123 has 8 divisors (see below), whose sum is σ = 7868378000. Its totient is φ = 3540770064.

The previous prime is 5311155107. The next prime is 5311155131. The reversal of 5311155123 is 3215511135.

5311155123 is a `hidden beast` number, since 5 + 31 + 115 + 512 + 3 = 666.

It is not a de Polignac number, because 5311155123 - 2⁴ = 5311155107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 196709449 = 5311155123 / (5 + 3 + 1 + 1 + 1 + 5 + 5 + 1 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5311155133) 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, 98354698 + ... + 98354751.

It is an arithmetic number, because the mean of its divisors is an integer number (983547250).

Almost surely, 2^5311155123 is an apocalyptic number.

5311155123 is a deficient number, since it is larger than the sum of its proper divisors (2557222877).

5311155123 is a wasteful number, since it uses less digits than its factorization.

5311155123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196709458 (or 196709452 counting only the distinct ones).

The product of its digits is 2250, while the sum is 27.

The square root of 5311155123 is about 72877.6723215005. The cubic root of 5311155123 is about 1744.7357583262.

Adding to 5311155123 its reverse (3215511135), we get a palindrome (8526666258).

The spelling of 5311155123 in words is "five billion, three hundred eleven million, one hundred fifty-five thousand, one hundred twenty-three".