102313215252551 has 4 divisors (see below), whose sum is σ = 102313409830104. Its totient is φ = 102313020675000.

The previous prime is 102313215252527. The next prime is 102313215252617. The reversal of 102313215252551 is 155252512313201.

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 102313215252551 - 2³⁰ = 102312141510727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102313205252551) 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, 96497900 + ... + 97552401.

It is an arithmetic number, because the mean of its divisors is an integer number (25578352457526).

Almost surely, 2^{102313215252551} is an apocalyptic number.

102313215252551 is a deficient number, since it is larger than the sum of its proper divisors (194577553).

102313215252551 is an equidigital number, since it uses as much as digits as its factorization.

102313215252551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194577552.

The product of its (nonzero) digits is 90000, while the sum is 38.

Adding to 102313215252551 its reverse (155252512313201), we get a palindrome (257565727565752).

The spelling of 102313215252551 in words is "one hundred two trillion, three hundred thirteen billion, two hundred fifteen million, two hundred fifty-two thousand, five hundred fifty-one".