1231023202132 has 6 divisors (see below), whose sum is σ = 2154290603738. Its totient is φ = 615511601064.

The previous prime is 1231023202117. The next prime is 1231023202133. The reversal of 1231023202132 is 2312023201321.

It can be written as a sum of positive squares in only one way, i.e., 885036903696 + 345986298436 = 940764^2 + 588206^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231023202133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153877900263 + ... + 153877900270.

Almost surely, 2^{1231023202132} is an apocalyptic number.

It is an amenable number.

1231023202132 is a deficient number, since it is larger than the sum of its proper divisors (923267401606).

1231023202132 is a wasteful number, since it uses less digits than its factorization.

1231023202132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307755800537 (or 307755800535 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1231023202132 its reverse (2312023201321), we get a palindrome (3543046403453).

The spelling of 1231023202132 in words is "one trillion, two hundred thirty-one billion, twenty-three million, two hundred two thousand, one hundred thirty-two".