102331305157 has 4 divisors (see below), whose sum is σ = 102332198080. Its totient is φ = 102330412236.

The previous prime is 102331305137. The next prime is 102331305229. The reversal of 102331305157 is 751503133201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 751503133201 = 751 ⋅1000669951.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102331305157 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 (102331305107) 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, 243933 + ... + 513970.

It is an arithmetic number, because the mean of its divisors is an integer number (25583049520).

Almost surely, 2^102331305157 is an apocalyptic number.

It is an amenable number.

102331305157 is a deficient number, since it is larger than the sum of its proper divisors (892923).

102331305157 is an equidigital number, since it uses as much as digits as its factorization.

102331305157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892922.

The product of its (nonzero) digits is 9450, while the sum is 31.

Adding to 102331305157 its reverse (751503133201), we get a palindrome (853834438358).

The spelling of 102331305157 in words is "one hundred two billion, three hundred thirty-one million, three hundred five thousand, one hundred fifty-seven".