2511291321 has 48 divisors (see below), whose sum is σ = 4562663040. Its totient is φ = 1292981760.

The previous prime is 2511291301. The next prime is 2511291329. The reversal of 2511291321 is 1231921152.

2511291321 is a `hidden beast` number, since 2 + 51 + 1 + 291 + 321 = 666.

It is not a de Polignac number, because 2511291321 - 2⁷ = 2511291193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2511291329) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62275 + ... + 94343.

It is an arithmetic number, because the mean of its divisors is an integer number (95055480).

Almost surely, 2^2511291321 is an apocalyptic number.

2511291321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2511291321 is a deficient number, since it is larger than the sum of its proper divisors (2051371719).

2511291321 is a wasteful number, since it uses less digits than its factorization.

2511291321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32206 (or 32203 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 2511291321 is about 50112.7860031749. The cubic root of 2511291321 is about 1359.2490305086.

The spelling of 2511291321 in words is "two billion, five hundred eleven million, two hundred ninety-one thousand, three hundred twenty-one".