131211210102 has 48 divisors (see below), whose sum is σ = 305394850800. Its totient is φ = 37473203712.

The previous prime is 131211210089. The next prime is 131211210131. The reversal of 131211210102 is 201012112131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 618274 + ... + 802922.

It is an arithmetic number, because the mean of its divisors is an integer number (6362392725).

Almost surely, 2^131211210102 is an apocalyptic number.

131211210102 is an abundant number, since it is smaller than the sum of its proper divisors (174183640698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131211210102 is a wasteful number, since it uses less digits than its factorization.

131211210102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187085 (or 187078 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 131211210102 its reverse (201012112131), we get a palindrome (332223322233).

The spelling of 131211210102 in words is "one hundred thirty-one billion, two hundred eleven million, two hundred ten thousand, one hundred two".