51351012236031 has 4 divisors (see below), whose sum is σ = 68468016314712. Its totient is φ = 34234008157352.

The previous prime is 51351012236021. The next prime is 51351012236057. The reversal of 51351012236031 is 13063221015315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51351012236031 - 2⁶ = 51351012235967 is a prime.

It is a super-2 number, since 2×51351012236031² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51351012235983 and 51351012236001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51351012236021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8558502039336 + ... + 8558502039341.

It is an arithmetic number, because the mean of its divisors is an integer number (17117004078678).

Almost surely, 2^{51351012236031} is an apocalyptic number.

51351012236031 is a deficient number, since it is larger than the sum of its proper divisors (17117004078681).

51351012236031 is a wasteful number, since it uses less digits than its factorization.

51351012236031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17117004078680.

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 51351012236031 in words is "fifty-one trillion, three hundred fifty-one billion, twelve million, two hundred thirty-six thousand, thirty-one".