2311322661351 has 20 divisors (see below), whose sum is σ = 3766599894024. Its totient is φ = 1400801612400.

The previous prime is 2311322661343. The next prime is 2311322661353. The reversal of 2311322661351 is 1531662231132.

2311322661351 is a `hidden beast` number, since 2 + 3 + 1 + 1 + 32 + 2 + 6 + 613 + 5 + 1 = 666.

It is not a de Polignac number, because 2311322661351 - 2³ = 2311322661343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311322661353) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1297037640 + ... + 1297039421.

Almost surely, 2^{2311322661351} is an apocalyptic number.

2311322661351 is a deficient number, since it is larger than the sum of its proper divisors (1455277232673).

2311322661351 is a wasteful number, since it uses less digits than its factorization.

2311322661351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594077084 (or 2594077075 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

Adding to 2311322661351 its reverse (1531662231132), we get a palindrome (3842984892483).

The spelling of 2311322661351 in words is "two trillion, three hundred eleven billion, three hundred twenty-two million, six hundred sixty-one thousand, three hundred fifty-one".