1340103031 has 4 divisors (see below), whose sum is σ = 1349744200. Its totient is φ = 1330461864.

The previous prime is 1340102987. The next prime is 1340103059. The reversal of 1340103031 is 1303010431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1303010431 = 317 ⋅4110443.

It is a cyclic number.

It is not a de Polignac number, because 1340103031 - 2⁷ = 1340102903 is a prime.

It is a super-2 number, since 2×1340103031² = 3591752267390773922, 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 = 1340102996 and 1340103014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340103071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4820376 + ... + 4820653.

It is an arithmetic number, because the mean of its divisors is an integer number (337436050).

Almost surely, 2^1340103031 is an apocalyptic number.

1340103031 is a deficient number, since it is larger than the sum of its proper divisors (9641169).

1340103031 is an equidigital number, since it uses as much as digits as its factorization.

1340103031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9641168.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1340103031 is about 36607.4177046128. The cubic root of 1340103031 is about 1102.5020266895.

Adding to 1340103031 its reverse (1303010431), we get a palindrome (2643113462).

The spelling of 1340103031 in words is "one billion, three hundred forty million, one hundred three thousand, thirty-one".