1311303030 has 32 divisors (see below), whose sum is σ = 3160651104. Its totient is φ = 348178176.

The previous prime is 1311303023. The next prime is 1311303053. The reversal of 1311303030 is 303031131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 86809 + ... + 100788.

It is an arithmetic number, because the mean of its divisors is an integer number (98770347).

Almost surely, 2^1311303030 is an apocalyptic number.

1311303030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311303030 is an abundant number, since it is smaller than the sum of its proper divisors (1849348074).

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

1311303030 is a wasteful number, since it uses less digits than its factorization.

1311303030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187840.

The product of its (nonzero) digits is 81, while the sum is 15.

The square root of 1311303030 is about 36211.9183418940. The cubic root of 1311303030 is about 1094.5468486286.

Adding to 1311303030 its reverse (303031131), we get a palindrome (1614334161).

The spelling of 1311303030 in words is "one billion, three hundred eleven million, three hundred three thousand, thirty".