1201331423 has 8 divisors (see below), whose sum is σ = 1261980000. Its totient is φ = 1141384288.

The previous prime is 1201331399. The next prime is 1201331441. The reversal of 1201331423 is 3241331021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201331423 - 2¹² = 1201327327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201331395 and 1201331404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201331123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171848 + ... + 178701.

It is an arithmetic number, because the mean of its divisors is an integer number (157747500).

Almost surely, 2^1201331423 is an apocalyptic number.

1201331423 is a deficient number, since it is larger than the sum of its proper divisors (60648577).

1201331423 is a wasteful number, since it uses less digits than its factorization.

1201331423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350721.

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

The square root of 1201331423 is about 34660.2282594907. The cubic root of 1201331423 is about 1063.0514372702.

Adding to 1201331423 its reverse (3241331021), we get a palindrome (4442662444).

The spelling of 1201331423 in words is "one billion, two hundred one million, three hundred thirty-one thousand, four hundred twenty-three".