1311004031 has 8 divisors (see below), whose sum is σ = 1322974464. Its totient is φ = 1299087360.

The previous prime is 1311004027. The next prime is 1311004061. The reversal of 1311004031 is 1304001131.

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 1311004031 - 2² = 1311004027 is a prime.

It is a super-2 number, since 2×1311004031² = 3437463138596497922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311003997 and 1311004015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311004001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36386 + ... + 62816.

It is an arithmetic number, because the mean of its divisors is an integer number (165371808).

Almost surely, 2^1311004031 is an apocalyptic number.

1311004031 is a deficient number, since it is larger than the sum of its proper divisors (11970433).

1311004031 is a wasteful number, since it uses less digits than its factorization.

1311004031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26881.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1311004031 is about 36207.7896453236. The cubic root of 1311004031 is about 1094.4636506485.

Adding to 1311004031 its reverse (1304001131), we get a palindrome (2615005162).

The spelling of 1311004031 in words is "one billion, three hundred eleven million, four thousand, thirty-one".