1310000031 has 12 divisors (see below), whose sum is σ = 1936228008. Its totient is φ = 853023024.

The previous prime is 1310000017. The next prime is 1310000051. The reversal of 1310000031 is 1300000131.

It is not a de Polignac number, because 1310000031 - 2⁶ = 1309999967 is a prime.

It is a super-2 number, since 2×1310000031² = 3432200162440001922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1309999968 and 1310000022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310000051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1692120 + ... + 1692893.

It is an arithmetic number, because the mean of its divisors is an integer number (161352334).

Almost surely, 2^1310000031 is an apocalyptic number.

1310000031 is a deficient number, since it is larger than the sum of its proper divisors (626227977).

1310000031 is a wasteful number, since it uses less digits than its factorization.

1310000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3385062 (or 3385059 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 1310000031 is about 36193.9225699564. The cubic root of 1310000031 is about 1094.1841899945.

Adding to 1310000031 its reverse (1300000131), we get a palindrome (2610000162).

The spelling of 1310000031 in words is "one billion, three hundred ten million, thirty-one", and thus it is an aban number.