51030131211 has 24 divisors (see below), whose sum is σ = 76927568640. Its totient is φ = 32535627696.

The previous prime is 51030131177. The next prime is 51030131233. The reversal of 51030131211 is 11213103015.

51030131211 is a `hidden beast` number, since 51 + 0 + 301 + 312 + 1 + 1 = 666.

It is not a de Polignac number, because 51030131211 - 2⁷ = 51030131083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51030181211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1537530 + ... + 1570368.

It is an arithmetic number, because the mean of its divisors is an integer number (3205315360).

Almost surely, 2^51030131211 is an apocalyptic number.

51030131211 is a deficient number, since it is larger than the sum of its proper divisors (25897437429).

51030131211 is a wasteful number, since it uses less digits than its factorization.

51030131211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40375 (or 40372 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

Adding to 51030131211 its reverse (11213103015), we get a palindrome (62243234226).

The spelling of 51030131211 in words is "fifty-one billion, thirty million, one hundred thirty-one thousand, two hundred eleven".