1306038697 has 4 divisors (see below), whose sum is σ = 1313859456. Its totient is φ = 1298217940.

The previous prime is 1306038689. The next prime is 1306038703. The reversal of 1306038697 is 7968306031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7968306031 = 7 ⋅1138329433.

It is a cyclic number.

It is not a de Polignac number, because 1306038697 - 2³ = 1306038689 is a prime.

It is a super-2 number, since 2×1306038697² = 3411474156122915618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1306038607) 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, 3910129 + ... + 3910462.

It is an arithmetic number, because the mean of its divisors is an integer number (328464864).

Almost surely, 2^1306038697 is an apocalyptic number.

It is an amenable number.

1306038697 is a deficient number, since it is larger than the sum of its proper divisors (7820759).

1306038697 is an equidigital number, since it uses as much as digits as its factorization.

1306038697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7820758.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 1306038697 is about 36139.1573919481. The cubic root of 1306038697 is about 1093.0801682964.

The spelling of 1306038697 in words is "one billion, three hundred six million, thirty-eight thousand, six hundred ninety-seven".