102431212003551 has 4 divisors (see below), whose sum is σ = 136574949338072. Its totient is φ = 68287474669032.

The previous prime is 102431212003537. The next prime is 102431212003559. The reversal of 102431212003551 is 155300212134201.

It is a happy number.

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

It is not a de Polignac number, because 102431212003551 - 2¹⁸ = 102431211741407 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 (102431212003559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17071868667256 + ... + 17071868667261.

It is an arithmetic number, because the mean of its divisors is an integer number (34143737334518).

Almost surely, 2^{102431212003551} is an apocalyptic number.

102431212003551 is a deficient number, since it is larger than the sum of its proper divisors (34143737334521).

102431212003551 is an equidigital number, since it uses as much as digits as its factorization.

102431212003551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34143737334520.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 102431212003551 its reverse (155300212134201), we get a palindrome (257731424137752).

The spelling of 102431212003551 in words is "one hundred two trillion, four hundred thirty-one billion, two hundred twelve million, three thousand, five hundred fifty-one".