5311111531 has 16 divisors (see below), whose sum is σ = 5969645568. Its totient is φ = 4683683200.

The previous prime is 5311111513. The next prime is 5311111543. The reversal of 5311111531 is 1351111135.

It is a cyclic number.

It is not a de Polignac number, because 5311111531 - 2⁵ = 5311111499 is a prime.

It is a super-2 number, since 2×5311111531² = 56415811389442327922, which contains 22 as substring.

It is a Duffinian number.

5311111531 is a modest number, since divided by 111531 gives 5311 as remainder.

It is not an unprimeable number, because it can be changed into a prime (5311111231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12966 + ... + 103876.

It is an arithmetic number, because the mean of its divisors is an integer number (373102848).

Almost surely, 2^5311111531 is an apocalyptic number.

5311111531 is a deficient number, since it is larger than the sum of its proper divisors (658534037).

5311111531 is a wasteful number, since it uses less digits than its factorization.

5311111531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91082.

The product of its digits is 225, while the sum is 22.

The square root of 5311111531 is about 72877.3732443754. The cubic root of 5311111531 is about 1744.7309849309.

Adding to 5311111531 its reverse (1351111135), we get a palindrome (6662222666).

The spelling of 5311111531 in words is "five billion, three hundred eleven million, one hundred eleven thousand, five hundred thirty-one".