1200030031100 has 36 divisors (see below), whose sum is σ = 2693860524600. Its totient is φ = 463459872960.

The previous prime is 1200030031069. The next prime is 1200030031153. The reversal of 1200030031100 is 11300300021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206898830 + ... + 206904629.

Almost surely, 2^{1200030031100} is an apocalyptic number.

1200030031100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200030031100 is an abundant number, since it is smaller than the sum of its proper divisors (1493830493500).

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

1200030031100 is a wasteful number, since it uses less digits than its factorization.

1200030031100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413803502 (or 413803495 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 1200030031100 its reverse (11300300021), we get a palindrome (1211330331121).

The spelling of 1200030031100 in words is "one trillion, two hundred billion, thirty million, thirty-one thousand, one hundred".