102031221110331 has 4 divisors (see below), whose sum is σ = 136041628147112. Its totient is φ = 68020814073552.

The previous prime is 102031221110219. The next prime is 102031221110353. The reversal of 102031221110331 is 133011122130201.

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

It is not a de Polignac number, because 102031221110331 - 2¹⁸ = 102031220848187 is a prime.

It is a super-2 number, since 2×102031221110331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102031221110298 and 102031221110307.

It is not an unprimeable number, because it can be changed into a prime (102031221110431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17005203518386 + ... + 17005203518391.

It is an arithmetic number, because the mean of its divisors is an integer number (34010407036778).

Almost surely, 2^{102031221110331} is an apocalyptic number.

102031221110331 is a deficient number, since it is larger than the sum of its proper divisors (34010407036781).

102031221110331 is an equidigital number, since it uses as much as digits as its factorization.

102031221110331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34010407036780.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 102031221110331 its reverse (133011122130201), we get a palindrome (235042343240532).

The spelling of 102031221110331 in words is "one hundred two trillion, thirty-one billion, two hundred twenty-one million, one hundred ten thousand, three hundred thirty-one".