1306213880 has 32 divisors (see below), whose sum is σ = 2956595040. Its totient is φ = 519354240.

The previous prime is 1306213877. The next prime is 1306213891. The reversal of 1306213880 is 883126031.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91091 + ... + 104450.

It is an arithmetic number, because the mean of its divisors is an integer number (92393595).

Almost surely, 2^1306213880 is an apocalyptic number.

1306213880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1306213880 is an abundant number, since it is smaller than the sum of its proper divisors (1650381160).

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

1306213880 is a wasteful number, since it uses less digits than its factorization.

1306213880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195719 (or 195715 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1306213880 is about 36141.5810390193. The cubic root of 1306213880 is about 1093.1290388499.

The spelling of 1306213880 in words is "one billion, three hundred six million, two hundred thirteen thousand, eight hundred eighty".