31345232143051 has 2 divisors, whose sum is σ = 31345232143052. Its totient is φ = 31345232143050.

The previous prime is 31345232143031. The next prime is 31345232143117. The reversal of 31345232143051 is 15034123254313.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (15034123254313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31345232143051 - 2⁷ = 31345232142923 is a prime.

It is a super-2 number, since 2×31345232143051² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31345232143051.

It is not a weakly prime, because it can be changed into another prime (31345232143031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15672616071525 + 15672616071526.

It is an arithmetic number, because the mean of its divisors is an integer number (15672616071526).

Almost surely, 2^{31345232143051} is an apocalyptic number.

31345232143051 is a deficient number, since it is larger than the sum of its proper divisors (1).

31345232143051 is an equidigital number, since it uses as much as digits as its factorization.

31345232143051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 31345232143051 its reverse (15034123254313), we get a palindrome (46379355397364).

The spelling of 31345232143051 in words is "thirty-one trillion, three hundred forty-five billion, two hundred thirty-two million, one hundred forty-three thousand, fifty-one".