1201131432 has 24 divisors (see below), whose sum is σ = 3253064490. Its totient is φ = 400377120.

The previous prime is 1201131431. The next prime is 1201131439. The reversal of 1201131432 is 2341311021.

1201131432 is a `hidden beast` number, since 1 + 201 + 1 + 31 + 432 = 666.

It can be written as a sum of positive squares in only one way, i.e., 765407556 + 435723876 = 27666^2 + 20874^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is not an unprimeable number, because it can be changed into a prime (1201131431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8341119 + ... + 8341262.

Almost surely, 2^1201131432 is an apocalyptic number.

1201131432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201131432 is an abundant number, since it is smaller than the sum of its proper divisors (2051933058).

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

1201131432 is a wasteful number, since it uses less digits than its factorization.

1201131432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16682393 (or 16682386 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1201131432 is about 34657.3431180176. The cubic root of 1201131432 is about 1062.9924436918.

Adding to 1201131432 its reverse (2341311021), we get a palindrome (3542442453).

The spelling of 1201131432 in words is "one billion, two hundred one million, one hundred thirty-one thousand, four hundred thirty-two".