31256060512451 has 2 divisors, whose sum is σ = 31256060512452. Its totient is φ = 31256060512450.

The previous prime is 31256060512403. The next prime is 31256060512529. The reversal of 31256060512451 is 15421506065213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31256060512451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31256060512399 and 31256060512408.

It is not a weakly prime, because it can be changed into another prime (31256060512051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15628030256225 + 15628030256226.

It is an arithmetic number, because the mean of its divisors is an integer number (15628030256226).

Almost surely, 2^{31256060512451} is an apocalyptic number.

31256060512451 is a deficient number, since it is larger than the sum of its proper divisors (1).

31256060512451 is an equidigital number, since it uses as much as digits as its factorization.

31256060512451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216000, while the sum is 41.

Adding to 31256060512451 its reverse (15421506065213), we get a palindrome (46677566577664).

The spelling of 31256060512451 in words is "thirty-one trillion, two hundred fifty-six billion, sixty million, five hundred twelve thousand, four hundred fifty-one".