291048381121 has 9 divisors (see below), whose sum is σ = 292626225633. Its totient is φ = 289479007620.

The previous prime is 291048381103. The next prime is 291048381133. The reversal of 291048381121 is 121183840192.

The square root of 291048381121 is 539489.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 291048381121 - 2³⁵ = 256688642753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (291048381191) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 107356956 + ... + 107359666.

Almost surely, 2^291048381121 is an apocalyptic number.

291048381121 is the 539489-th square number.

291048381121 is the 269745-th centered octagonal number.

It is an amenable number.

291048381121 is a deficient number, since it is larger than the sum of its proper divisors (1577844512).

291048381121 is an frugal number, since it uses more digits than its factorization.

291048381121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5820 (or 2910 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The spelling of 291048381121 in words is "two hundred ninety-one billion, forty-eight million, three hundred eighty-one thousand, one hundred twenty-one".