102504778331 has 4 divisors (see below), whose sum is σ = 108534471192. Its totient is φ = 96475085472.

The previous prime is 102504778301. The next prime is 102504778333. The reversal of 102504778331 is 133877405201.

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 102504778331 - 2⁶ = 102504778267 is a prime.

It is a super-2 number, since 2×102504778331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102504778333) 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, 3014846405 + ... + 3014846438.

It is an arithmetic number, because the mean of its divisors is an integer number (27133617798).

Almost surely, 2^102504778331 is an apocalyptic number.

102504778331 is a deficient number, since it is larger than the sum of its proper divisors (6029692861).

102504778331 is an equidigital number, since it uses as much as digits as its factorization.

102504778331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6029692860.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 102504778331 in words is "one hundred two billion, five hundred four million, seven hundred seventy-eight thousand, three hundred thirty-one".