1310131555 has 8 divisors (see below), whose sum is σ = 1573643232. Its totient is φ = 1047115008.

The previous prime is 1310131549. The next prime is 1310131577. The reversal of 1310131555 is 5551310131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1310131555 - 2¹³ = 1310123363 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117934 + ... + 128563.

It is an arithmetic number, because the mean of its divisors is an integer number (196705404).

Almost surely, 2^1310131555 is an apocalyptic number.

1310131555 is a deficient number, since it is larger than the sum of its proper divisors (263511677).

1310131555 is a wasteful number, since it uses less digits than its factorization.

1310131555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247565.

The product of its (nonzero) digits is 1125, while the sum is 25.

The square root of 1310131555 is about 36195.7394592237. The cubic root of 1310131555 is about 1094.2208074658.

Adding to 1310131555 its reverse (5551310131), we get a palindrome (6861441686).

The spelling of 1310131555 in words is "one billion, three hundred ten million, one hundred thirty-one thousand, five hundred fifty-five".