1200431134 has 72 divisors (see below), whose sum is σ = 2275484400. Its totient is φ = 465163776.

The previous prime is 1200431131. The next prime is 1200431143. The reversal of 1200431134 is 4311340021.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200431131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2673342 + ... + 2673790.

It is an arithmetic number, because the mean of its divisors is an integer number (31603950).

Almost surely, 2^1200431134 is an apocalyptic number.

1200431134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1200431134 is a deficient number, since it is larger than the sum of its proper divisors (1075053266).

1200431134 is a wasteful number, since it uses less digits than its factorization.

1200431134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1200431134 is about 34647.2384758151. The cubic root of 1200431134 is about 1062.7858173445.

Adding to 1200431134 its reverse (4311340021), we get a palindrome (5511771155).

The spelling of 1200431134 in words is "one billion, two hundred million, four hundred thirty-one thousand, one hundred thirty-four".