1311421035 has 32 divisors (see below), whose sum is σ = 2179457280. Its totient is φ = 672560000.

The previous prime is 1311421031. The next prime is 1311421043. The reversal of 1311421035 is 5301241131.

It is not a de Polignac number, because 1311421035 - 2² = 1311421031 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311421031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103180 + ... + 115190.

It is an arithmetic number, because the mean of its divisors is an integer number (68108040).

Almost surely, 2^1311421035 is an apocalyptic number.

1311421035 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1311421035 is a deficient number, since it is larger than the sum of its proper divisors (868036245).

1311421035 is a wasteful number, since it uses less digits than its factorization.

1311421035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12299.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1311421035 is about 36213.5476721075. The cubic root of 1311421035 is about 1094.5796806346.

Adding to 1311421035 its reverse (5301241131), we get a palindrome (6612662166).

The spelling of 1311421035 in words is "one billion, three hundred eleven million, four hundred twenty-one thousand, thirty-five".