5311231505 has 16 divisors (see below), whose sum is σ = 6427731024. Its totient is φ = 4212971520.

The previous prime is 5311231487. The next prime is 5311231529. The reversal of 5311231505 is 5051321135.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 24196561 + 5287034944 = 4919^2 + 72712^2 .

It is not a de Polignac number, because 5311231505 - 2⁶ = 5311231441 is a prime.

It is a super-3 number, since 3×5311231505³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271307 + ... + 290223.

It is an arithmetic number, because the mean of its divisors is an integer number (401733189).

Almost surely, 2^5311231505 is an apocalyptic number.

It is an amenable number.

5311231505 is a deficient number, since it is larger than the sum of its proper divisors (1116499519).

5311231505 is a wasteful number, since it uses less digits than its factorization.

5311231505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19396.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 5311231505 is about 72878.1963621494. The cubic root of 5311231505 is about 1744.7441222172.

The spelling of 5311231505 in words is "five billion, three hundred eleven million, two hundred thirty-one thousand, five hundred five".