102123031210 has 24 divisors (see below), whose sum is σ = 195270548940. Its totient is φ = 38446316544.

The previous prime is 102123031181. The next prime is 102123031217. The reversal of 102123031210 is 12130321201.

It can be written as a sum of positive squares in 6 ways, for example, as 63488376961 + 38634654249 = 251969^2 + 196557^2 .

It is a super-2 number, since 2×102123031210² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102123031217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17665455 + ... + 17671234.

Almost surely, 2^102123031210 is an apocalyptic number.

102123031210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102123031210 is a deficient number, since it is larger than the sum of its proper divisors (93147517730).

102123031210 is a wasteful number, since it uses less digits than its factorization.

102123031210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35336730 (or 35336713 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 102123031210 its reverse (12130321201), we get a palindrome (114253352411).

The spelling of 102123031210 in words is "one hundred two billion, one hundred twenty-three million, thirty-one thousand, two hundred ten".