102220031231 has 2 divisors, whose sum is σ = 102220031232. Its totient is φ = 102220031230.

The previous prime is 102220031219. The next prime is 102220031267. The reversal of 102220031231 is 132130022201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102220031231 - 2⁶ = 102220031167 is a prime.

It is a super-2 number, since 2×102220031231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102220036231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110015615 + 51110015616.

It is an arithmetic number, because the mean of its divisors is an integer number (51110015616).

Almost surely, 2^102220031231 is an apocalyptic number.

102220031231 is a deficient number, since it is larger than the sum of its proper divisors (1).

102220031231 is an equidigital number, since it uses as much as digits as its factorization.

102220031231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 102220031231 its reverse (132130022201), we get a palindrome (234350053432).

The spelling of 102220031231 in words is "one hundred two billion, two hundred twenty million, thirty-one thousand, two hundred thirty-one".