1201323134 has 16 divisors (see below), whose sum is σ = 1980155376. Its totient is φ = 542068800.

The previous prime is 1201323119. The next prime is 1201323163. The reversal of 1201323134 is 4313231021.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196277 + ... + 202304.

It is an arithmetic number, because the mean of its divisors is an integer number (123759711).

Almost surely, 2^1201323134 is an apocalyptic number.

1201323134 is a deficient number, since it is larger than the sum of its proper divisors (778832242).

1201323134 is a wasteful number, since it uses less digits than its factorization.

1201323134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398731.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1201323134 is about 34660.1086841920. The cubic root of 1201323134 is about 1063.0489923014.

Adding to 1201323134 its reverse (4313231021), we get a palindrome (5514554155).

The spelling of 1201323134 in words is "one billion, two hundred one million, three hundred twenty-three thousand, one hundred thirty-four".