1311020034 has 32 divisors (see below), whose sum is σ = 2685697344. Its totient is φ = 426417600.

The previous prime is 1311020017. The next prime is 1311020047. The reversal of 1311020034 is 4300201131.

1311020034 = 31² + 32² + ... + 1578².

It is a super-2 number, since 2×1311020034² = 3437547059098722312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1311019995 and 1311020022.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352384 + ... + 356084.

It is an arithmetic number, because the mean of its divisors is an integer number (83928042).

Almost surely, 2^1311020034 is an apocalyptic number.

1311020034 is an abundant number, since it is smaller than the sum of its proper divisors (1374677310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311020034 is a wasteful number, since it uses less digits than its factorization.

1311020034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5122.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1311020034 is about 36208.0106330077. The cubic root of 1311020034 is about 1094.4681038843.

Adding to 1311020034 its reverse (4300201131), we get a palindrome (5611221165).

The spelling of 1311020034 in words is "one billion, three hundred eleven million, twenty thousand, thirty-four".