1231003121132 has 6 divisors (see below), whose sum is σ = 2154255461988. Its totient is φ = 615501560564.

The previous prime is 1231003121093. The next prime is 1231003121137. The reversal of 1231003121132 is 2311213001321.

It is a happy number.

It is a super-2 number, since 2×1231003121132² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231003121137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153875390138 + ... + 153875390145.

It is an arithmetic number, because the mean of its divisors is an integer number (359042576998).

Almost surely, 2^{1231003121132} is an apocalyptic number.

It is an amenable number.

1231003121132 is a deficient number, since it is larger than the sum of its proper divisors (923252340856).

1231003121132 is a wasteful number, since it uses less digits than its factorization.

1231003121132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307750780287 (or 307750780285 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1231003121132 its reverse (2311213001321), we get a palindrome (3542216122453).

The spelling of 1231003121132 in words is "one trillion, two hundred thirty-one billion, three million, one hundred twenty-one thousand, one hundred thirty-two".