2311130541555 has 64 divisors (see below), whose sum is σ = 4483182090240. Its totient is φ = 1120300761600.

The previous prime is 2311130541523. The next prime is 2311130541649. The reversal of 2311130541555 is 5551450311132.

2311130541555 is a `hidden beast` number, since 2 + 31 + 1 + 1 + 30 + 5 + 41 + 555 = 666.

It is not a de Polignac number, because 2311130541555 - 2⁵ = 2311130541523 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6648139 + ... + 6987131.

It is an arithmetic number, because the mean of its divisors is an integer number (70049720160).

Almost surely, 2^{2311130541555} is an apocalyptic number.

2311130541555 is a deficient number, since it is larger than the sum of its proper divisors (2172051548685).

2311130541555 is a wasteful number, since it uses less digits than its factorization.

2311130541555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343609 (or 343603 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

Adding to 2311130541555 its reverse (5551450311132), we get a palindrome (7862580852687).

The spelling of 2311130541555 in words is "two trillion, three hundred eleven billion, one hundred thirty million, five hundred forty-one thousand, five hundred fifty-five".