1230312131100 has 216 divisors, whose sum is σ = 4286955533952. Its totient is φ = 293076748800.

The previous prime is 1230312131089. The next prime is 1230312131107. The reversal of 1230312131100 is 11312130321.

1230312131100 is a `hidden beast` number, since 1 + 230 + 3 + 121 + 311 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230312131107) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1333347 + ... + 2058746.

Almost surely, 2^{1230312131100} is an apocalyptic number.

1230312131100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230312131100 is an abundant number, since it is smaller than the sum of its proper divisors (3056643402852).

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

1230312131100 is a wasteful number, since it uses less digits than its factorization.

1230312131100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392157 (or 3392147 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1230312131100 its reverse (11312130321), we get a palindrome (1241624261421).

The spelling of 1230312131100 in words is "one trillion, two hundred thirty billion, three hundred twelve million, one hundred thirty-one thousand, one hundred".