1306881122 has 4 divisors (see below), whose sum is σ = 1960321686. Its totient is φ = 653440560.

The previous prime is 1306881101. The next prime is 1306881131. The reversal of 1306881122 is 2211886031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 822485041 + 484396081 = 28679^2 + 22009^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326720279 + ... + 326720282.

Almost surely, 2^1306881122 is an apocalyptic number.

1306881122 is a deficient number, since it is larger than the sum of its proper divisors (653440564).

1306881122 is an equidigital number, since it uses as much as digits as its factorization.

1306881122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653440563.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1306881122 is about 36150.8108069515. The cubic root of 1306881122 is about 1093.3151384002.

The spelling of 1306881122 in words is "one billion, three hundred six million, eight hundred eighty-one thousand, one hundred twenty-two".